CM-ET Lodestar - Manual (Page 18)

*Resistance Values listed are nominal and they may vary
slightly from component to component.
**On dual voltage units (230/460-3-60, 220/380-3-50 and
220/415-3-50), brake coils operate on 230 (220) volts.
14
ELECTRICAL DATA
TO DETECT OPEN AND SHORT CIRCUITS IN ELECRICAL COMPONENTS
Open circuits in the coils of electrical components may be detected by isolating the coil and checking for continuity with an
ohmeter or with the unit in series with a light or bell circuit.
Shorted turns are indicated by a current draw substantially above normal (connect ammeter in series with suspected element
and impose normal voltage) or D.C. resistance substantially below normal. The current method is recommend for coils with
very low D.C. resistance.
Motor current draw in the stator should be measured with the rotor in place and running. Brake, relay and contactor coil cur-
rent should be measured with the core iron in operating position.
Table 7. Electrical Data For Hoist Components
Transformer
Voltage
Leads *D.C.
Resistance
(Ohms)
230/460 To 115 X1 To X2 22.8
H1 To H2 127
H3 To H4 158
220/380 To 48 X1 To X2 4.0
H1 To H2 127
H3 To H4 158
220/415 To 24 X1 To X2 1.1
H1 To H2 127
H3 To H4 158
Models Brake
Coil
Voltage
Nominal
Current
(Amps)
*D.C.
Resistance
(Ohms)
B, C and F **230 .17 23.1
J, L, R **230 .46 4.6
JJ, LL,RR **230 1.7 2.2
Models Contactor
Coil Voltage
Nominal
Current
(Amps)
*D.C.
Resistance
(Ohms)
B thru RR 115 0.04 297.5
48 0.09 56.3
24 0.19 14.9
Models/
Cap.
Volts-
Phase-
Hertz
H.P
(Kw)
Full
Load
Current
(Amps)
Motor
Leads
*D.C.
Resist.
(Ohms)
B - 1/4 Ton
230/460-3-60
1/4
(.186)
1.6/.81
W-BL to O-
19.4 W-B to O-B
220/380-3-50 1.9/.85
W to O-G
Y-B to Y-BL
39.3
220/415-3-50 1.9/.80
Y-B to Y-G
Y-BL to Y-G
C - 1/4 Ton
F - 1/2 Ton
230/460-3-60
1/2
(.373)
1.7/.85
W-BL to O-
12.4 W-B to O-B
220/380-3-50 2.0/1.0
W to O-G
Y-B to Y-BL
24.5
220/415-3-50 2.0/1.0
Y-B to Y-G
Y-BL to Y-G
Models/
Cap.
Volts-
Phase-
Hertz
H.P.
(Kw)
Full
Load
Current
(Amps)
Motor
Leads
*D.C.
Resist.
(Ohms)
J - 1/2 Ton
L- 1 Ton
R - 2 Ton
230/460-3-60
1
(.746)
4.1/2.2
W-BL to O-BL
5.1 W-B to O-B
230/380-3-50 4.6/2.3
W to O-G
Y-B to Y-BL
10.2
230/415-3-50 4.2/2.1
Y-B to Y-G
Y-BL to Y-G
LL- 1 Ton
RR - 2 Ton
230/460-3-60
2
(1.49)
7.3/3.9
W-BL to O-BL
2.3 W-B to O-B
230/380-3-50 8.6/3.7
W to O-G
Y-B to Y-BL
4.6
230/380-3-50 8.6/3.9
Y-B to Y-G
Y-BL to Y-G
MOTOR DATA
MOTOR DATA