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1.4 TERMINAL IDENTIFICATION
Table 1: Terminal Identification
Terminal Block
Identification
Numbers (Figure 1)
Terminal
Identification Function/Description
TB1-1-3 N,G,L AC power input terminals 120VAC, 50-60Hz.
TB5-1, 2 + BAT - 24VDC Battery connection.
TB7-1, 2 IN1+,IN1- These terminals connect to the input voltage source (i.e. 12VDC or
24VDC FACP). The FACP will supply a voltage from 8-33V (FWR or DC)
at 7mA. During the alarm condition these inputs will cause the designated
outputs to drive the notification appliances (designated outputs are set by
output DIP switch banks). During Stand-by the PS-24-8MC can report
troubles from the designated loop by opening the FACP’s initiation loop.
During an alarm condition the PS-24-8MC closes the loop to ensure that
the alarm condition will be passed through to the next device on the loop.
TB7-3, 4 RET1+, RET1- EOLR is connected on these terminals corresponding to IN1+ and IN1-,
or the loop may be continued to other power supplies or appliances
before terminating.
TB8-1, 2 IN2+, IN2- Same as IN1+, IN1- for corresponding terminals.
TB8-5, 4 RET2+, RET2- Same as RET1+, RET1- for corresponding terminals.
TB7-5, 6 C “DRY1” NC Dry contacts are used to actuate the designated outputs. Contacts are
normally closed and actuate the power supply on contact Open.
Designated outputs correspond to IN1+,IN1-. NOTE: Wiring must remain
in the same room in conduit. NOTE: FACP NAC circuit cannot energize
the power supply by these contacts. NOTE: When these terminals are
not in use, a jumper must be connected across them.
TB8-5, 6 C “DRY2” NC Operates the same as IN2+,IN2- for corresponding terminals. When
these terminals are not in use, a jumper must be connected across them.
NOTE: Wiring must remain in the same room in conduit.
TB6-1, 2
TB6-3, 4
TB6-5, 6
TB6-7, 8
+OUT1-
+OUT2-
+OUT3-
+OUT4-
Indicating appliances are connected to these outputs (See Examples in
Operation Section). Each output can supply a maximum load of 3.0
Amps Class "B" or Class "A" and can be individually programmed for
Normal Mode, Temporal Mode, IN>OUT SYNC Mode, or WHEELOCK
SYNC Mode. The outputs can be configured as four Class "B" circuits,
two Class "A" circuits, or two Class "B" and one Class "A" circuits. With
the optional PS-4CA module 101648 the unit can provide four Class “A”
circuits. Outputs are controlled by a designated input (INPUT 1 or 2) as
selected by the DIP switch for that output. NOTE: When the panel has
been set to synchronization mode, IN1 is used for strobe activation and
IN2 is used for audible silence. Individual output control is disabled.
TB4-1-3 “NO” “C” “NC”
(COMMON
TROUBLE
OUTPUT)
Typically used to trigger remote alerts or other reporting appliances.
Form C contacts rated 28VDC at 1 Amp. Resistive
TB2-1-3 “NO” “C” “NC”
(AC LOSS
TROUBLE
OUTPUT)
Used for local reporting of AC power loss to trigger remote alerts or other
reporting appliances. Form C contacts rated 28VDC at 1 Amp. Resistive
TB9-1, 2 + AUX - AUX output is rated 20.1 to 28VDC, special applications. (See Appendix
A for suitable devices). In MP mode: AUX output is capable of 3.5Amps,
and can be reset by a momentary switch on the board. The 3.5 Amps of
power is disconnected when AC power is lost or the unit is in alarm. The
3.5 Amps of power is reconnected 30 seconds after AC power returns or
the alarm condition is over. In CP mode: The AUX output is capable of
200mAmps with 12AH battery or 70mAmps with 7AH battery. In CP
mode, power is available during AC power loss (batteries connected) and
during an alarm condition.
