JOHNSON CONTROLS
4
FORM 160.76-PW6
ISSUE DATE: 09/06/2019
1. This wiring diagram describes the standard elec-
tronic control scheme for use with YORK Solid
State Starter or Variable Speed Drive. For details
of standard modications, refer to Form 160.76-
PW4.
2. Field wiring must be in accordance with the Na-
tional Electrical Code (NEC), as well as all oth-
er applicable codes and specications. Refer to
product Form 160.76-PW1 or 160.76-PW7 for
eld wiring connections.
Field wiring contacts may have
voltage present when power is
removed. Field wiring contacts
could be connected to external power
sources.
3. Numbers along the left side of the diagram are
line identication numbers. The numbers along
the right side indicate the line number location of
the relay contacts. An underlined contact location
signies a normally closed contact.
4. The main control panel class 1 eld wiring ter-
minal connection points are indicated by numbers
within a rectangle. The main control panel factory
wiring terminal connection points are indicated
by numbers within a triangle. Components mark-
ings are indicated by numbers within a circle.
Numbers adjacent to circuit lines are the circuit
identication numbers.
5. To cycle the unit on and off automatically with
contacts other than those shown, install a cycling
device between Terminals 1 and 13 (line 38). See
Note 7. If a cycling device is installed, the jumper
must be removed between Terminals 1 and 13.
6. A remote run-stop switch may be connected to
Terminals 1 and 7 (line 32). See Note 7. The re-
mote run-stop (line 32) is operative only in the
remote operating mode.
7. The device contact rating must be 5 mA at
115 VAC.
8. The contact rating is 5 A resistive at 120 VAC or
240 VAC.
NOTES
9. For the wiring diagram of LCSSS or LVVSD, re-
fer to product Form 160.76-PW6.
10. A jumper is installed between Terminals 21 and
24 for normal operation. To check motor rotation
on initial start-up, complete the following steps:
a. Remove the jumper and install a momentary
switch between Terminals 21 and 24.
b. Press the Start key on the display screen on
the control panel.
c. After completion of the prelube sequence,
jog the motor with the momentary switch.
d. When proper rotation is obtained, replace the
momentary switch with a jumper. The mo-
mentary switch must have a minimum con-
tact rating of 1 FLA, 10 LRA at 115 VAC.
A temporary momentary switch
or jumper is the only connection
permitted between Terminals 21
and 24. Connections of any other
devices to either Terminals 21 and
24 may cause inadvertent compressor
start-up.
11. Solid state motor overload contact (CM) LCSSS
is set up to trip at 105% FLA.
12. Contact rating is 5 A resistive at 250 VAC and
30 VDC, and 2 A inductive (0.4 PF) at 250 VAC
and 30 VDC.
13. Field connected control power supply is not re-
quired, as control transformer is supplied on the
solid state starter and the medium voltage variable
speed drive.
14. The maximum allowable current draw for the sum
of all loads is 2 A holding, 10 A inrush.
15. Each 115 VAC eld-connected inductive load,
that is relay coil, motor starter coil, and others,
must have a transient suppressor wired in parallel
with its coil, physically located at the coil. Spare
transient suppressors and control circuit fuses are
supplied in a bag attached to the green ground
screw located in the lower left corner of the con-
trol panel.
