Connections Of Power Supply For Contactors - Generac Power Systems RTSR600A3 Owner's Manual

Installation
Control of a Separate Contactor
A separate contactor relay module can be purchased from the manu-
facturer. This model is supplied in a 24 VAC (requires a starter kit,
which includes a field installed 24VAC transformer and the first 50
amp, 24V actuated module) or 120 VAC coil version.
1. Mount the contactor module and connect the load to the main
contacts.
2. Connect the contactor coil to the desired OPCB (contactor 1, 2,
3 or 4) terminals on the terminal strip.
3. Connect additional Power Management Module contactors in a
similar fashion.
It will be necessary to determine the order of "shedding" the con-
nected loads and connect the loads to the OPCB in that order.
One is the highest priority and four is the lowest priority.
2.6 CONNECTION OF POWER SUPPLY FOR
CONTACTORS
The Overload Prevention Control Board (OPCB) can be powered from
either a 24 VAC or 120 VAC power supply. The 24 VAC supply is from
a class 2 transformer that can be purchased from the manufacturer.
Mounting holes are provided in the enclosure subplate for mounting of
the transformer. The 120 VAC supply is fused at 5 amps and is factory
connected to OPCB terminals labeled "T1 and "Neutral".
2.6.1 24 VAC SUPPLY
Transformer connection are made as shown in Figure 2.2.
• Blue wire - OPCB "LOAD SUPPLY 1" terminal
• Black wire - OPCB "T1" terminal
• White wire - OPCB "NEUTRAL" terminal
• Yellow wire - OPCB "LOAD SUPPLY 2" terminal
Factory
wiring
6
NOTE:
Figure 2.2 — 24 VAC Supply Connections
0 Ground
SUPPLY
194 +12V
NEUTRAL
23 Transfer
A/C 1 SUPPLY
24V
LOAD 1
A/C 2
24V
LOAD 2
A/C 1 & LOAD 1
LOAD 3
A/C 2 & LOAD 2
LOAD 3
LOAD
LOAD 4
2.6.2 120 VAC SUPPLY
Install the following jumpers on the OPCB module (Figure 2.3).
• Wire - Load Supply 1 to T1
• Wire - Load Supply 2 to T2

Load supply voltage on the OPCB terminals
must match the PMM contactor coil voltage, or
the equipment will be damaged.
Figure 2.3 — 120 VAC Supply Connections
LOAD
1
T1
LOAD
2
1
2
1A MAX
1
2
1A MAX
1
2
Existing
1A MAX
1
wiring
4
2
1A MAX
Blue
Transformer
Black
leads
White
Field installed
Yellow