INTRODUCTIONThe Model DLC Device Loop Card from Siemens Industry,
Inc., is the interface for connection of FireFinder-XLS/Desigo
Fire Safety Modular/Cerberus PRO Modular smoke detectors, Multi-Criteria detectors including Carbon Monoxide,
manual stations, monitor devices, and control devices to the
FireFinder-XLS/Desigo Fire Safety Modular/Cerberus PRO
Modular System. The DLC uses one network address on the
system. The application program that is loaded into the onboard microprocessor controls the DLC operation.
The DLC contains 12 LEDs for diagnosis of problems.
Ground fault detection is provided by the loop.
All field devices connected to the DLC are addressed and
tested using the Device Programming Unit (DPU).
Z
O
N
E
1
Z
O
N
E
2
RESET
POWER
CARD FAIL
HNET FAIL
GND FAULT
ALARM
TROUBLE
ZONES STATUS
CLASS A OPEN
CLASS A RETURN
SHORT
CLASS A OPEN
CLASS A RETURN
SHORT
OPERATIONThe DLC initializes, operates, and maintains all devices
residing on the loop. The DLC communicates all relevant
device and event information, such as alarms and troubles,
to the System CPU. The sensitivity of any intelligent smoke
detector and the logic functions of any intelligent output
devices can be checked and adjusted from the Operator
Interface (OI) through the DLC. All information about the
devices on the loop can be displayed on the OI. The DLC
allows the System polarity insensitive devices to be
connected without generating errors.
The DLC supports only one loop (two isolated parallel
zones) of up to 252 FireFinder-XLS/Desigo Fire Safety
Modular/Cerberus PRO Modular intelligent field devices as
well as device accessories (relay bases, audible bases, and
remote lamps) in any combination. The microprocessor
controls the on-board isolator to isolate either zone from
the loop if one of them is shorted. When one zone is
isolated from the loop, the other zone will still work.
The on-board microprocessor provides the DLC with the
ability to function and initiate alarm conditions even if the
main FireFinder-XLS/Desigo Fire Safety Modular/Cerberus
PRO Modular CPU fails.
HUNDREDS
TENS
ONES
Figure 1
DLC Device Loop Card
P/N 315-033090-17
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Page 2
Multi-Criteria detectors (Table 1) are supported by the OI, FW version 9.02 and later,
and the DLC with Firmware version 06.xx and later. The DLC can be made backwards
compatible in systems using OI, P/N 500-033070, with DLC Firmware version 05.06
or earlier.
The OI collaborates with the DLC FW to identify compatibility with the Multi-Criteria
detectors (Table 1). In cases where the OI does not support the Multi-Criteria
detectors, the OI will specify “Configuration Process Failure”, and illuminate the
“TROUBLE” LED on the DLC. In cases where Multi-Criteria detectors are not used,
the DLC can be reprogrammed with the FW version 05.06 or earlier. The compatibility chart is as follows:
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Controls and IndicatorsThe front panel of the DLC contains one reset switch, 12 LEDs, and three HNET
address switches, as shown in Figure 1. A reset switch is located on the top of the
front panel. Pushing the reset switch re-initializes the DLC operation.
The LEDs follow the reset switch and their functions are defined as follows:
POWER(Green)Normally ON. When illuminated, indi-
cates the power for the DLC is applied to
the card.
CARD FAIL(Yellow)Normally OFF. When illuminated, indi-
cates the card microprocessor has failed.
HNET FAIL(Yellow)Normally OFF. When illuminated, indi-
cates that the HNET communication with
the DLC has terminated and the card
goes into degrade mode.
GND FAULT(Yellow)Normally OFF. When illuminated, indi-
cates that the DLC has detected either a
negative or positive ground fault on its
field wiring.
ALARM(Red)Normally OFF. When illuminated, indicates
TROUBLE(Yellow)Normally OFF. When illuminated, indi-
Siemens Industry, Inc.
Building Technologies Division
that the DLC has detected an alarm.
cates that the DLC has detected a
trouble on its field wiring; or incapability
between firmware in either the OI, DLC,
or both.
P/N 315-033090-172
Page 3
CLASS A OPEN–ZONE 1(Yellow)Normally Off. When illuminated, indi-
cates a Zone 1 wire is open if the loop
was set to Class A.
CLASS A RETURN–ZONE 1(Yellow)Normally Off. When illuminated, indi-
cates a Zone 1 return wire is reversed if
the loop was set to Class A.
SHORT–ZONE 1(Yellow)Normally Off. When illuminated, indi-
cates a Zone 1 wire short.
CLASS A OPEN–ZONE 2(Yellow)Normally Off. When illuminated, indi-
cates a Zone 2 wire is open if the loop
was set to Class A.
CLASS A RETURN–ZONE 2(Yellow)Normally Off. When illuminated, indi-
cates a Zone 2 return wire is reversed if
the loop was set to Class A.
SHORT–ZONE 2(Yellow)Normally Off. When illuminated, indi-
cates a Zone 2 wire short.
Three rotary dial switches at the bottom of the front panel are used to set the HNET
network address of the DLC. All field devices connected to the DLC are addressed
and tested using the Device Programming Unit (DPU). Refer to the DPU Manual,
P/N 315-033260 for further information.
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Building Technologies Division
P/N 315-033090-173
Page 4
PRE-INSTALLATIONSet the three-digit HNET network address for the DLC using the three rotary dial
HNET
switches located near the bottom of the front panel. (Refer to Figure 1 for the
HUNDREDS
TENS
ONES
location of the switches.) The address for the DLC must be the same as the address
selected for it in the Zeus Programming Tool. To set the address, turn the pointers on
each of the three dials to the numbers for the selected address. For example, if the
address is 123, set the pointer for the HUNDREDS dial to “1”, set the pointer for the
TENS dial to “2”, and set the pointer for the ONES dial to “3”. The range of allowable
addresses is from 001 to 251 (leading zeros must be used).
INSTALLATIONThe DLC plugs perpendicularly into one slot in the CC-5 card-cage via two 96-pin DIN
connectors and can occupy any slot in the card cage. (Refer to Figure 2.)
Insert the DLC card into the card guides rightside up
(lettering on the front panel is legible)
Slide the card in until the card edge connectors contact
the receptacles on the motherboard.
Verify that the DIN connectors of the card and the cardcage are aligned properly. The card can only be plugged
into the card cage in one direction; if it does not align,
DO NOT FORCE the card.
Figure 2
Installing The DLC
WIRING
Place thumbs on the front panel adjacent to the captive
screws and gently apply even pressure on the card until
the connectors seat in the receptacles on the
motherboard.
Secure the card with the captive screws.
Remove all system power before installation, first battery then AC. (To power up,
connect the AC first, then the battery.)
All field wiring to the DLC is connected to the terminal blocks of the CC-5 card cage
slot in which it is installed.
To Connect External Wiring
1.Loosen the screw of the terminal by turning it counterclockwise.
2.Insert the wire into the side of the terminal block.
3.Tighten the screw of the terminal block by turning it clockwise.
Connect +24V from the PSC-12 to terminal 17 and -24V from the PSC-12 to terminal
18 of the slot in the CC-5 where the DLC will be installed. (Refer to Figure 3.)
Siemens Industry, Inc.
Building Technologies Division
P/N 315-033090-174
Page 5
12345678
910111213141516
CLASS A WIRING*
NO T-TAPPING ALLOWED
BOTH ZONES MUST BE WIRED AS CLASS A
12345678
910111213141516
CLASS B WIRING**
T-TAPPING ALLOWED
BOTH ZONES MUST BE WIRED AS CLASS B
NOTES:
1. NO END OF LINE DEVICE REQUIRED.
2. BOTH CIRCUITS SUPERVISED AND POWER LIMITED PER NEC 760.
3. POSITIVE OR NEGATIVE GROUND FAULT DETECTED AT <50K OHMS ON TERMINALS 1-8.
4. FOR CLASS A CIRCUITS DO NOT TERMINATE SHIELDS (OPTIONAL) ON THE RETURN RUN.
*OPERATES IN FULL CONFORMANCE WITH STYLE 6 (ULC DCLA)
ZONE 1
ZONE 1
INITIATING
DEVICE
INITIATING
DEVICE
CC-5
CC-5
LINE 1
LINE 1
LINE 1 (RETURN)
LINE 1 (RETURN)
LINE 1 (OUT)
LINE 1 (OUT)
ZONE 2
ZONE 2
LINE 2
LINE 2
LINE 2 (OUT)
LINE 2 (OUT)
LINE 2 (RETURN)
LINE 2 (RETURN)
NOT USED
NOT USED
NOT USED
NOT USED
**OPERATES IN FULL CONFORMANCE WITH STYLE 4 (ULC DCLB)
SHIELD (OPTIONAL)
TERMINATE IN ENCLOSURE
WITH THE DLC. TERMINATE
AT ONE END ONLY.
TERMINATE TO EARTH
GROUND.
*
*
*
*
ZONE 1ZONE 2
LINE 1 (OUT)
12345678
910111213141516
LINE 1 (RETURN)
LINE 2 (RETURN)
LINE 1 (OUT)
LINE 2 (OUT)
DO NOT USE
LINE 1 (RETURN)
ONE SLOT OF CC-5
1718192021222324
24V-
24V+
DO NOT USE
TO 24VDC FROM THE PSC-12
Figure 3
Wiring The 24VDC Power Lines To The DLC Slot In The CC-5
LINE 2 (RETURN)
LINE 2 (OUT)
Figure 4
DLC Wiring Diagram
Siemens Industry, Inc.
Building Technologies Division
P/N 315-033090-175
Page 6
The DLC circuit can be wired Style 4 (Class B) or Style 6 (Class A). On-board
switches controlled by microprocessor allow selection of Class A or B without using
jumpers for Class B. The DLC field circuit wiring does not require twisted, shielded
wire. It can be installed in conduit containing low voltage power, notification appliance circuits, audible and speaker zone circuits, and RS-485 and other data circuits
without restrictions.
Electrical connections for the two zones are shown in Figure 4. The wiring style is set
in the Zeus Programming Tool without using external jumpers. Once the wiring style
is set, both zones will be set to the same style.
Do not wire the two zones in different styles.
If the return wires in either zone are reversed (in a Class A configuration), the CLASS
A RETURN LED associated with the affected zone will be illuminated. Switch the two
return wires to remove this trouble. Eliminate all other troubles before completing
the installation.
COMPATIBILITY1.The DLC supports only FireFinder-XLS/Desigo Fire Safety Modular/Cerberus
PRO Modular intelligent devices. The compatibility identifiers for the compatible devices are the model numbers listed in Table 1 for UL 864 and in Table 2
for UL2572. Use any combination of those listed in Table 1 or Table 2, as
applicable.
2.The DLC supports one loop (with 2 isolated zones) of up to 252 FireFinderXLS/Desigo Fire Safety Modular/Cerberus PRO Modular intelligent field
devices. Up to 252 devices can be distributed in either zone, but the total
number is limited. For example, if 100 devices are in Zone 1, then the
number of the devices in Zone 2 must be 152 or less.
3.All circuits are power limited to NFPA 70 per NEC 760. The DLC supports
the use of 12-22 AWG non-shielded, non-twisted, thermoplastic fixture wire
without conduit, if permitted by local building codes.
4.No end of line device is required.
5.Total circuit resistance of each zone must not exceed 50 ohms when 252
devices are loaded into one zone. (Refer to the chart on page 7.)
Maximum capacitance:0.5μF between line+ and line-
1. 0 μF between line and chassis
6.T-tapping is not allowed on Class A loops.
7.All models are UL and ULC listed.
8.The Multi-Criteria detectors are programmed using the DPU. The SBGA-34
base, connected to a ZIC-4A, P/N 500-033050, or ZIC-8B, P/N 500-648670,
can be used to create Temporal 4 tones in conjunction with the Carbon
Monoxide enabled detectors FDOOTC441 and OOHC941. Using these
detectors with the ABHW-4S or ABHW-4B, the selection of tones are
chosen using the panel’s configuration tool.
Siemens Industry, Inc.
Building Technologies Division
Siemens Industry, Inc.
Building Technologies Division
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P/N 315-033090-177
Page 8
260
250
240
230
220
210
200
190
180
170
160
150
140
130
120
110
Line Resistance (Ohms)
100
90
80
70
60
50
40
30
20
10
110
6013050
100
120
1502109020080
160220
180
170230
19070140
240
250
260
Max Current Load of Devices
DLC LINE RESISTANCE vs MAX CURRENT LOAD OF DEVICES
Note 1: The total number of devices in two zones can not exceed 252.
Note 2: The total current load in two zones cannot exceed 350ma.
Note 3: Max line resistance of each zone must not exceed 50 ohms if 252ma loaded.
For CE applications in Siemens E100 systems refer to
Installation Instruction A24205-A334-B844 (English) or A24205-A334-A844 (German).
Siemens Industry, Inc.
Building Technologies Division
P/N 315-033090-178
Page 9
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customized to individual security needs. Such a security concept may result in additional site-specific preventive action to ensure that the building comfort, fire safety, security management or physical security system for
your site are operated in a secure manner. These measures may include, but are not limited to, separating
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For additional information on building technology security and our offerings, contact your Siemens sales or
project department. We strongly recommend customers to follow our security advisories, which provide information on the latest security threats, patches and other mitigation measures.