Specifications

LEGEND
AUX — Auxiliary
BR — Bridge Rectifier
CB — Circuit Breaker
COMM — Communication
COND — Condenser
CPU — Central Processing Unit
CVC — Chiler Visual Controller
CT — Current Transformer
EVAP — Evaporator
FU — Fuse
G—Ground
L—Main Supply Power
LL — Control Power Supply
M—Contactor
O/L — Overload Reset
S—Contactor
SCR — Silicone Controller Rectifier
ST — Shunt Trip
TB — Terminal Block
Wire Node Symbol
may have terminal block
Benshaw supplied
terminal block
Terminal Strip
Power Connection
NOTES:
1
LED status with power applied and prior to run command.
‘‘ON’’
‘‘OFF’’
2
Transformer T1 primary fuses FU1/FU2 value dependent on system volt-
age and model, per Chart 1. Transformer connections per transformer name-
plate connection diagram.
3
MOVs are used on power stack assemblies for system voltages of 200 through
460 vac (as shown). Resistor/capacitor networks (DVDTs) are used on power
stack assemblies in place of MOVs for a system voltage of 575 vac (not
shown).
4
K3 relay shown in deenergized state. K3 contact will close when power is
applied. K3 contact will open on stop command or system fault.
Fig. 45 — Benshaw, Inc. Solid-State Unit Mounted Starter Wiring Schematic (Low Voltage) (cont)
PC Board Terminals
Twisted Pair
Twisted Shielded Pair
Shield Wire
Field Wiring
95