Siemens PLC-4 Manuale utente
P/N 315-093312-7
P7P5
P3
P1
P2 P4 P6 P8
PLC-4 MODULE BOARD
Circuit 1
E
dge connector
Edge connector
Circuit 2 Circuit 3 Circuit 4
CB1
P1 P2
PL864-25A/70A
CB1
P1
K1
P2
PL864-25S
Figure 2
PL864 Plug-on Boards
Figure 1
PLC-4 Module Board
Installation Instructions
Model PLC-4
Power Limiting Module
INTRODUCTION
Refer to the MME-3 or MLE-6 Power Limited
Wiring Instructions, P/N 315-094883 or P/N 315-
094970, as applicable, for further information.
The Model PLC-4 from Siemens Industry, Inc.,
(See Figure 1) and its associated PL864 plug-on
boards (See Figure 2) limit the power of the
MXLV system to comply with UL-864. There are
three different PL864 boards that can plug onto
the four slots of the PLC-4:
• the PL864-25A
• the PL864-70A
• the PL864-25S
The PL864-25A and the PL864-70A plug onto
the PLC-4 to limit power to audio circuits. The
PL864-25S plugs onto the PLC-4 to limit power
to strobe circuits.
NOTE: Use the PL-864S for strobe circuits
only. Using the PL-864S for audio
circuits may damage the system.
Use the PL864-70A for 70.7V audio
circuits only.
The PLC-4 plugs onto one of the OMM card
edge connectors. A single PLC-4 with four
PL864 plug-on boards can serve up to four
audio and/or strobe circuits.
The PLC-4 and PL864-25A/70A audio cards do
not supervise themselves. However, since all
audio power to the MXLV system passes
through them, signal losses appear as troubles
for the ASC-1/2 modules.
Siemens Industry, Inc.
Building Technologies Division
Florham Park, NJ
Siemens Building Technologies, Ltd.
Fire Safety & Security Products
2 Kenview Boulevard
Brampton, Ontario
L6T 5E4 Canada
2
The PL864-25S card supervises strobe power
with a relay that gives a contact closure. A
closure monitoring device can be wired to
terminals 11 and 12 of OMM-1 for strobe power
supervision.
If there is either an audio or strobe loss, follow
the procedure listed below:
1. Check the PLC-4 to see if the circuitbreaker
is tripped.
2. Shut down the system, determine what
caused the circuitbreaker to trip, and fix the
problem.
3. Reset the tripped circuitbreaker.
INSTALLATION
Remove all system power before
installation, first battery and then AC.
(To power up, connect the
AC first and then the battery.)
To install a PLC-4 card in an MXLV system,
follow these steps:
1. Install the PL864 cards into the PLC-4.
a. Determine which PL864 cards are to be
used. Typically, the audio portion of a
voice-equipped fire alarm control panel
is either 25V RMS or 70.7V RMS.
• Use the PL864-25A for 25V RMS
systems
• Use the PL864-70A for 70.7V RMS
systems
• Use the PL864-25S for strobe circuits
in any voice system.
NOTE: The PL864-25S is not re-
quired for strobe circuits
connected to either the
CSM-4 or MMB.
b. Determine which circuits will be used.
Refer to Figure 1 for the location of the
circuits on the PLC-4 board and to
Figure 5 for circuit wiring.
c. Remove the PLC-4 card from its protec-
tive bag.
d. Remove the PL864-25A, PL864-25S, or
PL864-70A cards from their protective
bags.
e. Place the PL864 plug-on cards, one at
a time, over the connectors on the
PLC-4 card for the desired circuits.
1) Locate P1 of each PL864 card near
the edge connector of the PLC-4
card (Refer to Figure 1).
2) Press down until the card seats
properly. Apply pressure near the
connectors—not in the middle of the
card—or damage may result.
3) For systems with 70.7V RMS audio
circuits, take extra care when placing
PL864-25S cards for strobe circuits.
A mixup could damage system
components.
2. Place the PLC-4 card in the OMM slot.
a. Do not install the card in its edge
connector until all OMM field wiring is
completed and checked for shorts,
opens, and other faults.
b. Find the card slot key provided in the
installation kit with the PLC-4 board.
Figure 3
Placing the Card Slot Key in the OMM-1
Figure 4
Location of the User Key for the PLC-4
2
1
80
79
FACTORY
KEY 1 FACTOR
Y
KEY 2
USER KEY
PIN NUMBERS
ON OMM-1
LOCATION OF THE USER KEY FOR THE PLC-4
50 52
49 51
3
Place the card slot key in the OMM
edge connector for the PLC-4 as shown
in Figure 3. See Figure 4 for the exact
location of the key for this module. The
key prevents installation of any other
card type in the PLC-4 slot. Two other
keys already installed in the OMM
prevent reverse installation of the card
in the OMM edge connectors. (See
Figure 4.)
c. Place the card in its card edge connector
correctly. The components on the board
must face the 22 position terminal block
where the wiring is terminated. Press
the card firmly in place to be sure it is
seated properly in the edge connector.
CAUTION
At all times handle all plug-in cards with ex-
treme care. When inserting or removing a
card, be sure the position of the card is kept
at right angles to the OMM board. Otherwise,
the plug-in card can damage or displace
other components.
Wiring
(Refer to Figure 5)
All wiring must comply with
national and local codes.
Dress the leads properly. Maintain the proper
routing and distances between the wiring that is
power limited (terminals 15 - 22) and wiring that
is not power limited (terminals 1 - 8). Refer to
the MME-3 or MLE-6 Power Limited Wiring
Instructions, P/N 315-094883 or P/N 315-
094970, as applicable, for further information.
When wiring for strobe cards:
• Connect OMM, terminals 11 and 12, to the
OCC-1 terminal block, terminals 15 and 16
respectively, for supervision of strobe
power.
• Route these wires with the power limited
wires.
Electrical Information
Maximum wire size: 14 AWG twisted pair,
unshielded
Minimum wire size: 18 AWG twisted pair,
unshielded
Input/output ratings for each circuit:
Audio: 100W at 25V RMS
100W at 70.7V RMS
Strobe: 4 amps at 24 VDC (96W)
Figure 5
PLC-4 Wiring Diagram
P/N 315-093312-7
NO CONNECTIONS
STROBE POWER
SUPERVISION
CIRCUIT 3 IN
CIRCUIT 4 OUT
OMM
Terminal
Block
CIRCUIT 3 OUT
CIRCUIT 2 OUT
CIRCUIT 1 OUT
CIRCUIT 1 IN
Wiring shown for Circuit 1 is typical of circuits
used for audio.
Use the PL864-25A for 25V RMS circuits.
Use the PL864-70 for 70.7V RMS circuits.
Maximum wire size: 14 AWG twisted pair, unshielded
Minimum wire size: 18 AWG twisted pair, unshielded
Input/output ratings for each circuit:
Audio: 100W at 25V RMS
100W at 70.7V RMS
Strobe: 24 VDC at 4A (96W)
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
NO CONNECTIONS
CONNECT TO CLOSURE
MONITORING DEVICE
CONNECT TO CLOSURE
MONITORING DEVICE
AUDIO FROM AMPLIFIER +
AUDIO TO ASC-1 OR ASC-2
AMPLIFIER INPUT +
AUDIO FROM AMPLIFIER -
AUDIO TO ASC-1 OR ASC-2
AMPLIFIER INPUT -
CIRCUIT 2 IN
24 VOLTS +
TO ZC1-8B STROBE CARD INPUT
24 VOLTS -
FROM MMB, PSR-1 OR ANY UL LISTED POWER SUPPLY
MANUFACTURED BY ALARM-SAF, MODEL BN4-002-UL
24 VOLTS+
FROM MMB, PSR-1 OR ANY UL LISTED POWER SUPPLY
MANUFACTURED BY ALARM-SAF, MODEL BN4-002-UL
24 VOLTS -
TO ZC1-8B STROBE CARD INPUT
Terminals1-8are not power limited.
Terminals 15 - 22 are power limited.
Refer to Wiring Specification for MXL,
MXL-IQ and MXLV Systems,
P/N 315-092772 revision 6 or higher,
for additional wiring information.
CIRCUIT 4 IN
(Wiring shown for
Circuit 4 is typical
of circuits used for
strobes. Use the
PL864-25S plug-on
card only.)
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