Siemens Building Technologies
Fire Safety
P/N 315-033150-3
Model OCM-16
Output Control Module
Installation Instructions
INTRODUCTION
The
SIEMENS
Model OCM-16 Output Control Module
is a remotely located, general purpose output module. It
provides sixteen open collector outputs to drive LEDs,
incandescent lamps, or external relays. There is an
additional output for a local audible and two inputs for
momentary lamp test and local audible silence switches.
OPERATION
The OCM-16 is mounted in an enclosure that is re-
motely located from the Main Panel. Communication
between the OCM and the NIC-C is through the Control
Area Network (CAN) bus. Each OCM-16 has two 10
position rotary switches that are used to set the board
address on the CAN which is a sub-address of the
NIC-C. The 16 outputs of the OCM-16 are controlled by
messages received from the NIC-C over the CAN.
A CAN message can activate any or all of the 16 outputs
to drive LEDs, incandescent 24 Volt lamps or relays.
Whenever any of the outputs is activated, (LEDs, lamps
or relays ON) the local audible (if installed) will sound
until it is acknowledged by shorting position 19 and 20
on TB2. If the outputs are deactivated before the alarm
(local audible) is acknowledged, the alarm (local
audible) will cease to sound.
By shorting terminals 17 and 18, all LEDs or lamps will
turn on to confirm that they are working and automati-
cally will return to their normal state after a few sec-
onds. Both the lamp test and local audible silence
switch on multiple OCM-16s can be connected to a
single switch, one for each function. A single audible
can also be used with multiple OCM-16s.
Figure 1
OCM-16 Output Control
Module
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
12
3
4 5 6 7
8
90
12
3
4 5 6 7
8
90
S1
1
5
3
7
2
6
4
8
S2
TB2
TB1
P2
P3
TB3
1
5
3
7
2
6
4
8
OCM-16
