![background image](http://html1.mh-extra.com/html/york/optiview-yk/optiview-yk_service-instructions-manual_3510350132.webp)
132
FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 12 - CURRENT MODULE (CM-2)
JCI COMPANY CONFIDENTIAL
JOHNSON CONTROLS
FIGURE 56 -
CM-2 CURRENT MODULE – INTERFACE, CURRENT TRANSFORMERS, AND VARIABLE RESISTORS
LD04082
LD04081
NOTES:
A. Requires passing motor lead through current transformer (CT)
once before connecting to power supply.
B. Requires passing motor lead through CT twice before connect-
ing to power supply.
C. Requires passing motor lead through CT three times before
connecting to power supply.
D. Calculates resistance of “RES” to achieve 1.0 VDC at FLA.
MOTOR
VOLTAGE
FLA
CT
RATIO
RES
D
(OHMS)
208-600
65-111
A
112-224
A
225-829
A
830-1790
A
200:1
350:1
700:1
1400:1
R = 1.282 (CT RATIO)
FLA
2300-4160
11-18
C
200:1
R = 0.247 (CT RATIO)
FLA
19-37
B
200:1
R = 0.370 (CT RATIO)
FLA
38-123
A
200:1
R = 0.740 (CT RATIO)
FLA
124-264
A
350:1
265-518
A
700:1