24V 12A FAIL
24V 4A FAIL
PSX-12 OR CC-5
(24VDC @ 12A Max.)
Positive and negative ground fault
<50K ohms for TB3 terminals 1,2.
<60K ohms for TB4 terminals 1,2.
Terminal Blocks, Controls and Indicators
Siemens Industry, Inc.
Building Technologies Division
24V 4A FAIL - (Yellow) Normally OFF . When illuminated, indicates that the
Three rotary dial switches located directly below the LEDs are used to set
the HNET network address of the PSC-12.
The terminal blocks of the PSX-12 are defined as follows (refer to Figure 2):
This output is normally connected to the input terminals of the CC-5. All
wiring must be in accordance with Article 760 of NEC or local building
codes. (See Figure 2.)
PSX-12 OR CC-5
24VDC power limited output has a trouble condition or the
PSX-12 has disconnected the 24VDC power output due to
current overload or short circuit.
24VDC Non-Power Limited Output Terminal. This terminal is
non-power limited and can supply up to 12A. When the
current draw is exceeded, it shuts down, lights its associ-
ated LED and sends a fault condition to the NCC.
Output Voltage: 24VDC +10%, -15%
Output Current: 12A max
TB4-1: (+) terminal
TB4-2: (-) terminal
The total cumulative sum of the 24VDC output (power limited +
non-power limited) must not exceed 12A. Over current draw
will initiate a PSX-12 shut down.
The main AC power line must be turned OFF prior to installation.
Connects the back-up battery to the PSX-12.
Always apply AC power first followed by the battery.
AC input connector from the PTB, terminals P4 or P5.
Connects the PSX-12 to the system. It is a straight- through
connection between the two connectors. It contains the
communication signals and system signal bus that is necessary
for the proper operation of the system.
These connectors are power limited. If the PSX-12 is located in
a different row in the enclosure, an optional extended ribbon
cable, Model BCL (P/N 500-633997), must be used.