GAI-Tronics 12599-002 Hot Standby Amplifier Module - Manual (Page 3)

Pub. 42004-412A
Model 12599-002 Hot Standby Amplifier Module Page: 3 of 17
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06/08
Installation
WARNING
Disconnect power for safety when installing or replacing the module.
The Model 12599-002 Hot Standby Amplifier Module measures 12 L
× 4 W × 1.5 H inches (305 × 102 ×
31.75 mm) and is designed for mounting on 4-inch Snap Trak.
Carefully press the module edges into the SnapTrak to avoid damage to the module’s PCBA and/or
components. Once installed, ensure the module edges are secured in the channels so that the module does
not dislodge during transport or operation if subjected to vibration.
Also, if this module is used with other (cascaded) modules, a 1-inch (25.4-mm) spacing between modules
will facilitate wiring at the edge-mounted terminal blocks.
Terminations
The Model 12599-002 Hot Standby Amplifier Module is equipped with modular (plug-in type) terminal
blocks. These modular terminal blocks simplify external wire connections during installation, and
provide quick disconnect if replacement is ever required.
The following is a breakdown of each terminal block and its function(s):
TB1 – is the 12 V dc power input to the module.
TB2 – is a 12 V dc power output to another (cascaded) module or another 12 V dc-powered device.
TB3 – is the Amp-1 through Amp-6 fault inputs. The + and - terminals connect to the amplifier’s fault
output, which can be a wet (active) output or a dry, normally closed contact. Since each fault input
operates independently, amplifiers with different fault output types can be simultaneously connected to
this module’s inputs. The following details the different types of amplifier fault outputs, and the required
jumper settings. See Note 1.
W ET (A CTIVE ) O UTPUT – requires the amplifier to output 10–15 V dc when operating in a healthy state
and the respective jumper clips set to the wet position. Be sure to match polarity markings, e.g., + to +
(plus to plus) and – to –
(minus to minus) between the amplifier’s fault output and input terminals at this
module for proper operation. Refer to Figure 2 for a connection detail.
D RY (N.C.) C ONTACT O UTPUT – requires the amplifier to provide a dry, normally closed contact when
operating in a healthy state and the respective jumper clips set to the dry position. Connection of the
amplifier’s normally closed fault contact connects across the + (plus) and – (minus) terminals at the
module. Refer to Figure 3 for a connection detail.
O PEN C OLLECTOR (A CTIVE L OW ) – requires the amplifier to provide an active low output (sinking to dc
common) when operating in a healthy state, and the respective jumper clips to be set to the dry position.
Connection of the amplifier’s fault output has the input (common or emitter) side connected to the +
(plus) terminal, and the output (collector) connected to the – (minus) terminal for proper operation. Refer
to Figure 4 for a connection detail.