Remote Input or Output Components

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Key Notes:

Remote Input Component's section includes design notes on the following devices:

ScramblePads

MATCH Reader Interface

Readers

Line Modules

RQE Devices

Door Contacts

Surveillance Cameras

Remote Output Component's section includes design notes on the following devices:

Locks/Strikes

Doors

Gates

Turnstiles

Elevators

HVAC/Lighting

Printers

Remote Input Components


This section includes design notes on the following devices:

  • ScramblePads

  • MATCH Reader Interface

  • Readers

  • Line Modules

  • RQE Devices

  • Door Contacts

  • Surveillance Cameras

ScramblePads


The ScramblePad can be used to:

  • Unlock doors

  • Mask alarms

  • Trigger relays for equipment or process control

Pull cable runs from the controller to ScramblePads for each door. Make sure you select the correct ScramblePad mounting box for the applications and conditions specific to each door. Pay special attention to the specified mounting height for the ScramblePad. If it’s not right, the ScramblePad will be difficult to use properly.

Table 1-11 shows the many types of ScramblePads that are available

Table 1-11: ScramblePad Types

ScramblePad

Description

ScramblePad

Description

DS47L

Combines the ScramblePad with a MATCH reader interface.

DS47L-HI

High-intensity version of the DS47L.

DS47L-SPX

ScrambleProx. All-in-one ScramblePad/MATCH reader interface with built-in HID proximity reader. Use HID cards.

DS47L-SPX-HI

High-intensity version of the DS47L-SPX ScrambleProx. Use HID cards.

DS47L-SPX-I

DS47L-SPX ScrambleProx with built-in Indala reader. Use Indala 26-bit cards.

DS47L-SPX-I-HI

High-intensity version of the DS47L-SPX ScrambleProx with built-in Indala reader. Use Indala 26-bit cards.

BQT Readers

DS47L-SS-BT

ScrambleSmart which incorporates a ScramblePad with an integrated MIFARE smart card reader.

DS47L-SS-BT-HI

High-intensity display version of ScrambleSmart.

DS47L-SS-BT-DF

Same as ScrambleSmart but with integrated MIFARE DESfire smart card reader.

DS47L-SS-BT-HI-DF

High-intensity display version of the ScrambleSmart with integrated MIFARE DESfire smart card reader.

HID Readers

DS47L-SS-HID

DS47L ScramblePad with embedded 13.56MHz, ISO 14443-4 A&B contactless smart card reader and antenna. Reads PIV II End Point, DESFire (with CHUID only), and iCLASS. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV II, DESFire with FASC-N encoding, or iCLASS cards.

DS47L-SS-HID-HI

High-intensity display version of DS47L-SS-HID.

DS47L-SS-HID-SN

Same as DS47L-SS-HID but reads MIFARE/DESFire Serial Numbers, and iCLASS. Use MIFARE, DESFire, or iCLASS cards.

DS47L-SS-HID-SN-HI

High-intensity display version of DS47L-SS-HID-SN.

DS47L-SSP-HID

DS47L ScramblePad with embedded 125kHz proximity and 13.56MHz, ISO 14443A&B contactless smart card readers and antennae. Reads PIV II End Point, DESFire (with CHUID
only), iCLASS, and HID 125kHz proximity. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV II, DESFire with FASC-N encoding, iCLASS cards., or HID 125kHZ cards.

DS47L-SSP-HID-HI

High-intensity display version of DS47L-SSP-HID.

DS47L-SSP-HID-SN

Same as DS47L-SSP-HID but reads MIFARE/DESFire serial numbers, iCLASS, and HID 125kHz proximity. Includes MATCH2 functionality. Use MIFARE, DESFire, iCLASS, or HID 125kHZ cards.

DS47L-SSP-HID-SN-HI

High-intensity display version of DS47L-SSP-HID-SN.

Integrated Engineering Readers

DS47L-SSDM-IE

DS47L ScramblePad with embedded 13.56MHz, ISO 14443-4A contactless smart card reader and antenna. Reads DESFire file system and MIFARE sector cards. PIV II Transition Compliant. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV, IE MIFARE or DESFire cards.

DS47L-SSDM-IE-HI

High-intensity display version of DS47L-SSDM-IE.

DS47L-SS-IE

DS47L ScramblePad with embedded 13.56MHz, ISO 14443-4 A&B contactless smart card reader and antenna. Reads PIV II End Point and PIV II Transitional cards including FRAC
(SmartMX), DoD alpha & beta, DESFire PIV (V0.6 only), TWIC V1, MMAC, DESFire SN (1st 4bytes), and MIFARE SN. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV II, MIFARE, or DESFire cards.

DS47L-SS-IE-HI

High intensity display version of DS47L-SS-IE.

DS47L-SSP-IE

DS47L ScramblePad with embedded 125kHz proximity and 13.56MHz, ISO 14443A&B contactless smart card readers and antennae. Reads PIV II End Point and PIV II Transitional cards including FRAC (SmartMX), DoD alpha & beta, DESFire PIV (V0.6 only), TWIC V1, and MMAC.. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV II, DESFire with FASC-N encoding, or HID 125kHZ cards.

DS47L-SSP-IE-HI

High-intensity display version of DS47L-SSP-IE.

The DS47L can be used in applications where an MRIB or an MRIA is used because it has the same bezel and physical tamper switch. The DS47L-SPX ScrambleProx provides a single device for card and code entry. The ScrambleProx also has a second reader port which can be used to connect a second reader to the other side of the door. This means that the ScrambleProx can be used to place dual technology on one side of the door and card access on the other side.

If you plan to use either the DS47L or the DS47L-SPX, you have several different configurations possible at the door site. Figure 1-31 through Figure 1-34 provide examples of several keypad configurations.

Figure 1-31: Possible DS47L Configurations

Figure 1-32: Possible ScrambleProx Configurations

Figure 1-33 and Figure 1-34 show the typical ScramblePad-to-Controller connections for DS47L-series ScramblePads.

Figure 1-33: Typical ScramblePad to Controller Connection

Figure 1-34: DS47L ScramblePad/DS47L-SPX ScrambleProx Connections to Controller/Reader

ScramblePad Mounting


The DS47L is ideal for normal lighting, such as interior walls and doorways. Mounting boxes for these keypads come in two main types: surface-mounted and flush-mounted.

Surface mounted boxes project from the wall on which they are mounted. Flush boxes are set into the wall so that they are flush with the wall.

Hirsch offers several varieties of each mounting box as shown in Figure 1-35. The dimensions for each of these boxes is shown in Table 1-12 in section “ScramblePad Mounting”. In addition, the Universal Mounting Kit (UMK) can be used with the MB2 and MBS2S to position the face at three different aspects: flush, semi-flush, and tilted (for handicapped).

For more information about installing mounting boxes, see “Installing the Mounting Box”. When ScramblePads must be installed on exterior walls or on gate posts, select the MB5 Exterior Mounting Box.
For exterior locations, consider one of these ScramblePad model options:

  • DS47L-HI

  • DS47L-SPX-HI

In high-ambient light conditions (which may occur indoors as well as outdoors), use the DS47L-HI or DS47L-SPX-HI. The standard ScramblePad uses Red LEDs which become unreadable in bright or direct sunlight. When ScramblePads are installed on east- or westfacing walls or gates, the display washes out in the morning or afternoon hours.

The high-intensity DS47L-HI or DS47L-SPX-HI uses the same off-white incandescent display used in commercial aircraft instrumentation. They are readable even in direct sunlight and highly reliable. The viewing restriction on the DS47L-HI or DS47L-SPX-HI is less restrictive: approximately 12° horizontally to help see the display or when installed in the MB5.

Figure 1-35 shows the ScramblePad and its available mounting boxes. For directions on mounting the ScramblePad, see “ScramblePad Installation”.

Figure 1-35: ScramblePads and Mountings

Dimension (Face): 5.75”H x 4.37”W (14.6cm x 11.11cm)
Dimension (Body): 4.5”H x 3.5”W x 2.25”D (11.43cm x 8.89cm x 5.71cm)
Shipping Weight: 2 lbs (0.9 kg)

The mounting height for each of these boxes is shown in Table 1-12 as measured from ground or floor level to the middle (centerline) of the ScramblePad in inches (and meters).

Table 1-12: Mounting Heights for ScramblePads and Mounting Boxes

Box

Specifications

Mounting Height

Box

Specifications

Mounting Height

MB1

Flush: standard

56 - 58 (1.42-1.46)

MB2

Surface: standard

56 - 58 (1.42-1.46)

MB2S

Flush: shallow for DS47L and DS47L-SPX

56 - 58 (1.42-1.46)

MB2SL

Surface: slope-front for DS47L and DS47L-SPX

56 - 58 (1.42-1.46)

MB3

Flush: heavy duty

56 - 58 (1.42-1.46)

MB4

Surface: heavy duty

56 - 58 (1.42-1.46)

MB5

Surface or Post: heavy duty exterior

56 - 58 (1.42-1.46)

MB8

Flush: heavy Duty slope front

46 - 48 (1.17 - 1.22)

MB9

Surface: heavy Duty slope front

46 - 48 (1.17 - 1.22)

MB20

Surface: slope-front keypad with magstripe reader mounted side-by-side

46 - 48 (1.17 - 1.22)

MP35

Curb mounting post for MB5

35 (0.89)

MP41

Street mounting post for MB5

44 1/8 (1.12)

MBX

Mounting Box Extension

1/2-inch (.012)

MBX-FL

Mounting Box Extension – Flush

1/2-inch (.012)

UMK

Universal Mounting Kit: Flush, Semi-Flush, or
Slope Front (requires MB2)

dependent on box/post

Most states require strict compliance with ADA (Americans with Disabilities Act) in addition to many local and regional code requirements. Consult your local codes for exact height requirements.

Select a mounting box which provides a convenient viewing angle for personnel confined to wheelchairs. The UMK provides several angles. The MB8, MB9, and MB20 are also tiltable for easy reading. To accommodate state and federal disabilities statutes, a tilted box may prove necessary. For information about installing mounting boxes, see “Installing the Mounting Box”.

See Figure 1-83 through Figure 1-88 for close-ups of ScramblePad Mounting Box types and dimensions.

Mounting Extensions

Hirsch mounting boxes can be fitted with two extensions:

  • MBX – A ½- inch extension for surface-mounted boxes used with ScramblePad or bezel-mounted reader assemblies in cases where the mounting box depth is too shallow for the electronics, as with some of the ScrambleSmart products. The MBX package includes four extra long screws and is suitable for use with the MB2, MB2S, MB2SL, or UMK/MB2 (either sloped or semi-flush).

  • MBX-FL – A ½-inch extension for flush-mounted boxes used with ScramblePad or bezel-mounted reader assemblies in cases where the mounting box depth is too shallow for the electronics, as with some of the ScrambleSmart products. The MBXFL includes four extra long screws and is suitable for use with the MB1.

Firestops for Mounting Boxes

Many installers are concerned about fire rating for their mounting boxes, particularly the MB2. The MB2 is not fire-rated; however, the box and its contents can be made fire-resistant using a hole-plug-type firestop. The firestop restores the wall’s fire rating.

To install it, simply mount the MB2 over a firestop. Firestops are available in many sizes and shapes and can be purchased from many suppliers. You can find most firestop manufacturers listed in the Thomas Register or through its webpage https://www.thomasnet.com/.

SPSH-1: Heated Back Cover for a DS47L ScramblePad


If you are using a DS47L ScramblePad in an environment where the temperature may drop below freezing or where condensation may be an issue, you can replace the reader’s standard back cover with the SPSH-1 heated back cover. For example, an SPSH-1 is recommended for outdoor applications (such as controlling access to a restricted parking area) in cold climates where a DS47L ScramblePad is enclosed in an MB5 mounting box and mounted on a pole.

The use of the SPSH-1 is not evaluated by UL.

The SPSH-1 draws its power from the G and the + connections of the DS47L (as shown in the following diagram), and it consumes 0.33 Amps at 28VDC.

When the DS47L is powered by a controller:

  • There can be only one DS47L with an SPSH-1 per door,

  • There can be no more than two DS47Ls with an SPSH-1 per controller, and

  • The maximum cabling distance between the controller and a DS47L with an
    SPSH-1 is half of the values shown in Table 1-6 in section “ScramblePad/MATCH Inputs”.

If you need to have more than two DS47Ls with an SPSH-1 connected to a controller, then

MATCH Reader Interface


The MATCH Reader Interface is required by all DIGI*TRAC controllers if you plan to attach any readers, unless one of these conditions exists:

  • You are only using a ScramblePad without a reader.

  • You are using a DS47L-SPX ScrambleProx which includes both a reader and a MATCH.

  • You are using a DS47L-series ScramblePad which includes a MATCH and a standard 26-bit card reader.

  • You are only using a Wiegand card reader which is directly wired to a Wiegand terminal on an Mx series controller.

  • You are using keypads/readers which are wired to the RS-485 OSDP terminal on an Mx-1 or Mx-1-ME controller.

The MATCH Reader Interface enables a large number of reader technologies to communicate successfully with a DIGI*TRAC or Mx controller.

Hirsch provides three MATCH Reader Interface configurations:

  • MATCH2 Reader Interface Board (MRIB)

  • MATCH2 Reader Interface Assembly (MRIA)

  • DS47L-series ScramblePad with integrated MATCH

The new MATCH2 board has fewer components than the old MATCH, but includes more functionality. The MATCH2 provides a second switch bank which can be programmed to accept a large selection of custom readers.

Figure 1-36: MATCH2 Board and Package

The MRIB consists of a printed circuit board mounted between two protective metal plates with keyhole mounting slots. The MRIA includes the MRIB which is attached to a mounting base and bezel. The bezel is the same as the one included with a ScramblePad and includes a physical tamper switch. The MRIA is designed for installation on a Hirsch mounting box. For a description of available mounting boxes, see “MRIA/MRIB Mounting”.

The MATCH is also integrated into the DS47L-series ScramblePads. These keypads can be used in much the same manner as a MATCH. But there are differences: while a DS47L ScramblePad can support one or two readers for dual entry or dual entry-card only exit, a MATCH can support two readers and two ScramblePads for dual entry and dual exit. Another and often better solution is to use DS47L ScramblePads, each with an associated reader.

The MRIB is normally located in close proximity to the readers it will connect to, as shown in Figure 1-37. The MRIB is usually installed above the ceiling line. A junction box (J-box) is often used to house and protect the board above the ceiling line. An MRIA in a Hirsch mounting box can also be used.

Figure 1-37: MATCH Location Example

Whether integrated or separate, the MATCH can supply 250mA to each reader using 5VDC. Readers which require more than 250 mA current (or other voltage levels) must always use a separate power supply. In addition, one or two ScramblePads can be connected to each MATCH. The MATCH should be located at the door or control location.

Each MATCH includes two reader connectors with 12-inch flying leads. The allowed maximum distance between the MATCH and a connected reader varies according to the reader. For example, the Hirsch CR11L Mag Stripe Card Reader can be located up to 500 feet (152 meters) from the MATCH to which it is connected. For maximum allowed distances between the MATCH and your selected reader(s), see “MATCH
Reader Installation” or refer to the literature shipped with your reader(s).

To increase the length beyond the prescribed maximum, the MATCH or attached reader must be powered locally. This eliminates the need for power from the controller and increases the allowed wire length. For more about powering a MATCH or reader, see Figure 1-110, “Powering the MATCH Locally (Schematic)”.

The dimensions and weight of the MATCH board and assembly are listed below:

Figure 1-38 provides an example of the connections between the MATCH, the reader, the ScramblePad, and the controller:

Figure 1-38: MATCH Connections (MATCH2 Shown)

The flying lead which connects the reader to the MATCH through one of two connectors on the board must conform to the wiring standards shown in Figure 1-38.

With a DS47L-series ScramblePad, a reader can be connected at a door without using an additional MATCH. The reader connects to the DS47L (and its integrated MATCH) and the ScramblePad then connects to the controller, as shown in Figure 1-39.

Figure 1-39: Using a DS47L-Series ScramblePad Instead of a Separate MATCH

For more about setting up the MATCH and installing it, see “MATCH Reader Installation”. When installing a DIGI*TRAC MATCH Enrollment Station (DMES), locate the ScramblePad/Reader tandem close to the controller and its printer. The maximum distance allowed between the DMES and the controller can be calculated using Table 1-7 (refer to the maximums for a MATCH and ScramblePad).

For more information about Enrollment Stations, see “Enrollment Station Installation”.

MRIA/MRIB Mounting


There are four mounting boxes available for the MRIA: the MB1, MB2, MB3 and MB4. The MRIB is usually mounted in a separate J-Box using the keyhole slots (see Figure 1-38). Choose the box that fits your system requirements.

Figure 1-40 shows the available MRIA mounting boxes. For directions on mounting the MRIA in an MB1, MB2, MB3, or MB4 mounting box, see “Installing the Mounting Box”. For instructions on mounting the MRIB, see “MATCH Interface Installation”.

Figure 1-40: Available MRIA Mounting Boxes

MATCH-Compatible Readers


Readers are a general category of access control devices that include:

  • Mag Stripe Card Readers (insertion and swipe)

  • Proximity Card Readers

  • Wiegand Card Readers

  • Biometric Readers (e.g. Hand Geometry, Retinal Scanner)

  • Barcode Readers

  • Infrared Readers

  • Wiegand-Compliant Keypads

When used in conjunction with the MATCH Reader Interface, most readers can communicate with Hirsch DIGI*TRAC or Mx controllers. Hirsch’s MR11LA includes an MRIA. The MR11LA consists of a CR11L magnetic stripe card reader mounted on an MRIA. The CR11L is small enough to fit within the MRIA bezel.

An example of how an MR11LA might work at a door is shown in Figure 1-41.

Figure 1-41: MR11LA Example

In addition, the DS47L family of ScramblePads includes an integrated MATCH which can support one or two readers (the D47L-SPX ScrambleProx also includes a built-in proximity reader). All other readers require the purchase of a separate MATCH and the connection of the reader to the MATCH Interface.

A complete list of ScramblePad DS47L readers with the MATCH already installed is shown in Table 1-13.

Table 1-13: DS47L ScramblePad Types

ScramblePad

Description

ScramblePad

Description

DS47L

Combines the ScramblePad with a MATCH reader interface.

DS47L-HI

High-intensity version of the DS47L.

DS47L-SPX

ScrambleProx. All-in-one ScramblePad/MATCH reader interface with built-in HID proximity reader. Use HID cards.

DS47L-SPX-HI

High-intensity version of the DS47L-SPX ScrambleProx. Use HID cards.

DS47L-SPX-I

DS47L-SPX ScrambleProx with built-in Indala reader. Use Indala 26-bit cards.

DS47L-SPX-I-HI

High-intensity version of the DS47L-SPX ScrambleProx with built-in Indala reader. Use Indala 26-bit cards.

BQT Readers

DS47L-SS-BT

ScrambleSmart which incorporates a ScramblePad with an integrated MIFARE smart card reader.

DS47L-SS-BT-HI

High-intensity display version of ScrambleSmart.

DS47L-SS-BT-DF

Same as ScrambleSmart but with integrated MIFARE DESfire smart card reader.

DS47L-SS-BT-HI-DF

High-intensity display version of the ScrambleSmart with integrated MIFARE DESfire smart card reader.

HID Readers

DS47L-SS-HID

DS47L ScramblePad with embedded 13.56MHz, ISO 14443-4 A&B contactless smart card reader and antenna. Reads PIV II End Point, DESFire (with CHUID only), and iCLASS. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV II, DESFire with FASC-N encoding, or iCLASS cards.

DS47L-SS-HID-HI

High-intensity display version of DS47L-SS-HID.

DS47L-SS-HID-SN

Same as DS47L-SS-HID but reads MIFARE/DESFire Serial Numbers, and iCLASS. Use MIFARE, DESFire, or iCLASS cards.

DS47L-SS-HID-SN-HI

High-intensity display version of DS47L-SS-HID-SN.

DS47L-SSP-HID

DS47L ScramblePad with embedded 125kHz proximity and 13.56MHz, ISO 14443A&B contactless smart card readers and antennae. Reads PIV II End Point, DESFire (with
CHUID only), iCLASS, and HID 125kHz proximity. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV II, DESFire with FASC-N encoding, iCLASS cards., or HID 125kHZ cards.

DS47L-SSP-HID-HI

High-intensity display version of DS47L-SSP-HID.

DS47L-SSP-HID-SN

Same as DS47L-SSP-HID but reads MIFARE/DESFire serial numbers, iCLASS, and HID 125kHz proximity. Includes MATCH2 functionality. Use MIFARE, DESFire, iCLASS, or HID 125kHZ cards.

DS47L-SSP-HID-SN-HI

High-intensity display version of DS47L-SSP-HID-SN.

Integrated Engineering Readers

DS47L-SSDM-IE

DS47L ScramblePad with embedded 13.56MHz, ISO 14443-4A contactless smart card reader and antenna. Reads DESFire file system and MIFARE sector cards. PIV II Transition
Compliant. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV, IE MIFARE or DESFire cards.

DS47L-SSDM-IE-HI

High-intensity display version of DS47L-SSDM-IE.

DS47L-SS-IE

DS47L ScramblePad with embedded 13.56MHz, ISO 14443-4 A&B contactless smart card reader and antenna. Reads PIV II End Point and PIV II Transitional cards including
FRAC (SmartMX), DoD alpha & beta, DESFire PIV (V0.6 only), TWIC V1, MMAC, DESFire SN (1st 4bytes), and MIFARE SN. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV II, MIFARE, or DESFire cards.

DS47L-SS-IE-HI

High intensity display version of DS47L-SS-IE.

DS47L-SSP-IE

DS47L ScramblePad with embedded 125kHz proximity and 13.56MHz, ISO 14443A&B contactless smart card readers and antennae. Reads PIV II End Point and PIV II Transitional cards including FRAC (SmartMX), DoD alpha & beta, DESFire PIV (V0.6 only), TWIC V1, and MMAC.. Includes MATCH2 functionality. One MATCH connector with 6-inch pigtail. Installs in Hirsch mounting boxes (MB2 or deeper). Use PIV II, DESFire with FASC-N encoding, or HID 125kHZ cards.

DS47L-SSP-IE-HI

High-intensity display version of DS47L-SSP-IE.

Older readers require the purchase of a separate MATCH and the connection of the reader to the MATCH Interface. Newer readers which have a Wiegand or an RS-485 OSDP interface can be connected directly to the appropriate terminals on an Mx, Mx-1, or Mx-1- ME controller.

Line Modules


Line Modules are a necessary component of the line module input circuits from the controller. In addition to providing supervision of the wiring from a controller, the line module also supports a request to exit (RQE) input and a tamper input.

Line Modules provide supervision by indicating when a circuit is shorted, opened, noisy, and/or out-of-spec. These conditions are usually considered attempts to breach the security of the system and are therefore monitored and reported on an input-by-input basis at all times for enabled inputs. The controller digitally processes the analog measurement of the circuit resistance at an effective 100 times per second rate. The circuit measures variation in conditions (±2% with the DTLM3 Line Module and ±4% with the DTLM1/2 Line
Modules) then reports any appropriate alarms upon detection.

Hirsch provides two types of line modules:

  • DTLM (Screw Terminals)

  • MELM (Flying Leads)

There is also a door contact with integral line module:

  • SBMS3-2707A
    Each line module type is explained in this section. For detailed information about setup, mounting, and installation of line modules, see “Line Module Installation”.

DTLM


The DIGI*TRAC line module (DTLM) provides terminal block connections. It is recommended that DTLMs be limited to a single sensor per input. The DTLM is used for the RQE, Auto-Relock, Door Forced, and Door Open Too Long (DOTL) functions. There are three types of DTLM:

  • The DTLM1 has one input and is used for alarm applications with ±4% sensitivity.

  • The DTLM2 has two inputs and is used when an RQE device is required to mask the line module input and, optionally, trigger the door lock with ±4% sensitivity.

  • The DTLM3 has three inputs and is used in high security applications where alarm, RQE, and tamper detection are required with ±2% sensitivity.

  • DTLM inputs are labeled 1, 2, and 3 for simplicity in which 1 normally connects to the door contact or alarm sensor, 2 connects to the RQE, and 3 monitors a Tamper switch.

Table 1-14: DTLM Wiring

Model

Terminals & Functions

HI LO

INPUT 1

INPUT 2

INPUT 3

DTLM1

DIGI*TRAC

Alarm

 

 

DTLM2

DIGI*TRAC

Alarm

RQE

 

DTLM3

DIGI*TRAC

Alarm

RQE

Tamper

As shown in Figure 1-42, the default configuration for line module input circuits is normally closed. For a closed circuit, the controller instantly reports an alarm for any attempt to tamper with or cut the circuit. For a normally open circuit, the circuit cannot be monitored and tampering goes undetected. All input devices must be isolated ‘dry contact’ types. (A dry contact is a switch or relay which provides no power to the circuit.)

Figure 1-42 DTLM Wiring

Confirm the polarity of the HI / LO terminals at both ends of the