15-60 HP 460 VAC controls: Jumper JP3 on the gate drive circuit board (Figure 2-3) must be moved
from position "A" to position "B". The gate drive circuit board is under the main control board. For
controls equipped with gate drive board No. 083051 only, no jumper changes required.
75-250 HP 460 VAC controls: No hardware jumper change required for these controls.
Single Phase Control Derating
No derating is required for 1 and 2 HP controls.
3-10 HP controls must be derated by 40% of their nameplated rating for single phase operation.
15 HP and larger controls must be derated by 50% of their nameplated rating for single phase
operation.
Figure 2-3 Gate Driver Circuit Board with JP3 Jumper.
Motor Connections
Connect the three phase power leads of the AC permanent magnet motor to terminals T1, T2, and
T3 of the control power terminal strip. Motor power connections are not phase sensitive. The motor
ground lead or case ground should be connected to the control chassis ground screw. Connection
of motor temperature sensor switch to the external trip input, J1-16 located on the J1 terminal strip
is optional. The motor thermostat must be a dry contact (N.C.) type requiring no external power to
operate.
CAUTION:
VOLTAGE MAY BE PRESENT AT THE MOTOR WHENEVER THE CONTROL
IS RECEIVING INPUT POWER. REMOVE ALL POWER FROM THE CONTROL
BEFORE ATTEMPTING ANY SERVICE OF THE MOTOR.
2-12 INSTALLATION
MN723H-10/95 11/28/95 1:09 AM Page 24 (Black plate)
Summary of Contents for 23H Series
Page 11: ...1 8 GENERAL INFORMATION MN723H 10 95 11 28 95 1 07 AM Page 12 Black plate...
Page 83: ...3 30 KEYPAD PROGRAMMING AND OPERATION MN723H 10 95 11 28 95 1 13 AM Page 84 Black plate...
Page 99: ...4 16 DIAGNOSTIC INFO AND TROUBLESHOOTING MN723H 10 95 11 28 95 1 14 AM Page 100 Black plate...
Page 125: ...5 26 APPENDIX G MN723H 10 95 11 28 95 1 21 AM Page 126 Black plate...
Page 126: ...MN723H 10 95 11 28 95 1 21 AM Page 127 Black plate...