SIEMENS GCM-8 Graphics Control Module Instruction Manual
- June 9, 2024
- SIEMENS
Table of Contents
Installation Instructions
Model GCM-8
Graphics Control Module
INTRODUCTION
The Model GCM-8 Graphics Control Module from Siemens Industry, Inc. is a
remotely located module. It provides twenty-four outputs to drive eight pairs
of LEDs. Each pair contains one bicolor (red/green) and one yellow LED. It
also provides eight inputs to connect to external momentary switches. The
functions of the switches and LEDs are programmed by inserting an SCM-8 in the
Zeus Tool (Refer to the Zeus Quick Start Guide, P/N 315-033875). All LEDs can
be programmed ON, OFF or FLASHING.
The GCM-8 is used for manual control of the fire system.
There is an additional input for a momentary lamp test.
OPERATION
The GCM-8 interfaces to eight switches and eight pairs of LEDs. Each switch is
associated with a pair of LEDs.
Pressing any of the eight switches generates a unique CAN message on the bus
to the NIC-C or DAC-NET that indicates which switch was pressed. A CAN message
from the NIC-C or DAC-NET to the GCM-8 produces a preprogrammed output to the
corresponding LED (ON, FLASHING or OFF). An open collector is provided for
connection to the CAN Sounder Board (CSB), a separate audio module. The CSB
provides an audible feedback to indicate that the switch closed properly and
that communication between the GCM-8 and NIC-C or DAC-NET was successful.
Refer to the CSB Installation Instructions, P/N 315-033040, for more
information.
By shorting terminals 1 and 2 of TB1, all LEDs will turn on to confirm that
they are working and automatically will return to their normal state after a
few seconds. The lamp test switch on multiple GCM-8s can be connected to a
single switch.
PRE-INSTALLATION
Set the board address for each GCM-8 using both of the ten-position rotary
switches (S1 and S2) located on the board (See Figure 1). The address must be
a sub-address of the NIC-C or DAC-NET and must be the same as the addresses
assigned in the Zeus Programming Tool. To set the address, turn the pointers
on each of the dials to the numbers for the selected address. For example, if
the address is 12, set the pointer for the TENS dial (S1) to “1” and set the
pointer for the ONES dial (S2) to “2”.
The range of allowable addresses is from 01 to 99 (leading zeros must be
used).
INSTALLATION
A GCM-8 may be installed in a REMBOX. When using REMBOX 2 or 4, mount the
GCM-8 in one module space on a REMBOX2-MP, P/N 500-634211 or REMBOX4-MP, P/N
500-634212 using the four screws provided. (Refer to REMBOX2-MP/REMBOX4MP
Installation Instructions, P/N 315-034211.) Up to 4 GCM-8s will fit in a
REMBOX2; up to 8 GCM-8s will fit in a REMBOX4.
WIRING
Remove all system power before installation, first battery then AC. (To power up, connect the AC first, then the battery.)
- Each GCM-8 module is a node in the CAN bus.
- The GCM-8 can be installed with or without an RNI. Connect 24V and CAN bus as shown in Figure 2.
- Up to 99 CAN modules, in any combination, can be connected to the CAN bus of each NIC-C or DAC-NET.
- Each GCM-8 module is shipped with one CCS cable.
- Cable connections for GCM-8 modules are shown in the following table:
GCM-8 CABLE CONNECTIONS
| Cable | Description | Part Number | Connection |
|---|---|---|---|
| CCL | CAN-CABLE-Long 30 in., 6-conductor | 599-634214 | Connects P4 on RNI to |
first GCM-8. Also connects from GCM-8 to P3 on CC-5/CC-2.
CCS| CAN-CABLE-Short 5% in., 6-conductor| 555-133539| Connects GCM-8 modules
to GCM-8, OCM-16 or SIM-16 modules in a single row
The CAN bus requires a 120S resistance at each end of the loop. Refer to the NIC-C Installation Instructions, P/N 315-033240 for details about CAN termination.
- Connections to J2 are shown in the following table:
CONNECTIONS TO J2
| POS | Designation | POS | Designation |
|---|---|---|---|
| 1 | Bicolor — GREEN1 | 2 | Bicolor — RED1 |
| 3 | Bicolor — GREEN2 | 4 | Bicolor — RED2 |
| 5 | Bicolor — GREEN3 | 6 | Bicolor — RED3 |
| 7 | Bicolor — GREEN4 | 8 | Bicolor — RED4 |
| 9 | Bicolor — GREENS | 10 | Bicolor — REDS |
| 11 | Bicolor — GREEN6 | 12 | Bicolor — RED6 |
| 13 | Bicolor — GREEN7 | 14 | Bicolor — RED7 |
| 15 | Bicolor — GREEN8 | 16 | Bicolor — RED8 |
| 17 | YELLOW1 | 18 | YELLOW2 |
| 19 | YELLOW3 | 20 | YELLOW4 |
| 21 | YELLOWS | 22 | YELLOW6 |
| 23 | YELLOW7 | 24 | YELLOW8 |
| 25 | SWITCH1 | 26 | SWITCH2 |
| 27 | SWITCH3 | 28 | SWITCH4 |
| 29 | SWITCHS | 30 | SWITCH6 |
| 31 | SWITCH7 | 32 | SWITCH8 |
| 33 | LED COMMON | 34 | SWITCH 5V POWER |
The GCM-8 has 2.7K limiting resistors for the Yellow1 to Yellow8 LEDs. The 2.7K limiting resistors for the bicolor LEDs must be provided by the External Graphics Panel.
NOTES
- All wiring must be in accordance with Article 760 of NEC or local building codes.
- All circuits are power limited per article 760 of NEC.
- Electrical Ratings: Standby current: 14mA max. @ 24VDC Active current: 200mA max. @ 24VDC
- For additonal information, refer to the NIC-C Installation Instructions, P/N 315033240.
- Lamp test switch must be UL 864 listed devices.
- CAN network max. line resistance 15S.
- Mount the Lamp Test on the REMBOX2/4 front door.
- P1 and J1 are for factory use only.
- FOR CONNECTION TO GEOGRAPHICS GEO PANEL, LINE UP PIN 1 IN J2 WITH PIN MARKED P1, 1 IN GEO PANEL.
ELECTRICAL RATINGS
| 24V Back Plane Current | 0 |
|---|---|
| 24V Screw Terminal Current | 15mA + 5mA per active LED |
| 6.2V Back Plane Current | 0 |
| 24V Standby Current | 15mA + 5mA per active LED |
Output Power
CAN Network Pair| 8V peak to peak max.
75mA max.
(during msg transmission)
Siemens Industry, Inc.
Building Technologies Division
Florham Park, NJ
Siemens Canada Limited
Building Technologies Division
2 Kenview Boulevard
Brampton, Ontario L6T 5E4 Canada
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