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Emerson Copeland Scroll ZB KC Series Application Engineering Bulletin page 6

Refrigeration compressors 7 to 15 hp
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leads should not be moved or extended because
of the possibility of inducing electronic noise into
the INT69SCY, which could cause false trips of the
module.
Module and Sensor Functional Check
The following fi eld troubleshooting procedure can be
used to evaluate the solid state control circuit: Refer to
Table 6 for a technical data summary.
Module Voltage Supply Troubleshooting
Verify that all wire connectors are maintaining
a good mechanical connection.
connectors that are loose.
Measure the voltage across T1-T2 to ensure
proper supply voltage.
Determine the control voltage by using a voltmeter
Emerson P/N
071-0520-07
Manufacturer P/N
T.I. 30AA201E
Voltage Supply
120V & 240V
Frequency
50Hz & 60Hz
Maximum Voltage
N/A
Maximum Current
5 Amps
Minimum Current
100 milliamps
Relay Output
2.5 A, 600 V
Power Output
< 5.5 VA
Trip Out Resistance
N/A
Reset Resistance
N/A
Reset Time
30 min ± 5 min
Manual Reset
T1-T2 interrupt for
minimum of 5 sec
Phase Sensor
Non Phase Sensing
Phase Monitoring
Non Phase Sensing
Circuit Rating
Trip Delay
Non Phase Sensing
Lockout
Non Phase Sensing
Reset For Lockout
Non Phase Sensing
© 2008 Emerson Climate Technologies
Printed in the U.S.A.
Application Engineering
B
U
L
Replace any
071-0520-05
Kriwan 69SC-DV
T1-T2 Module Power
120V & 240V
50Hz & 60Hz
M1-M2 Module Output Contacts
250VAC
5 Amps
100 milliamps
5 A, 300 VA
<3 VA
S1-S2 Thermal Protection
4500W ± 20%
2750W ± 20%
30 min ± 5 min
T1-T2 interrupt for
minimum of 5 sec
L1-L2-L3 Phase Monitoring
Non Phase Sensing
Non Phase Sensing
Non Phase Sensing
Non Phase Sensing
Non Phase Sensing
L
E
T
and then measure the voltage across the M1-M2
contacts:
a.
If the measured voltage is equal to the control
volts then the M1-M2 contacts are open.
b.
If the measurement is less than 1 volt and the
compressor is not running, then the problem
is external to the INT69SCY or INT69SU
module.
c.
If the voltage is greater than 1 volt but less than
the control voltage, the module is faulty and
should be replaced.
Sensor Troubleshooting
Remove the leads from S1-S2, and then by using
an ohmmeter measure the resistance of the
incoming leads.
CAUTION: Use an Ohmmeter with a maximum
TABLE 6
071-0620-00
Kriwan 69SCY
120V & 240V
50Hz & 60Hz
250VAC
5 Amps
100 milliamps
5 A, 300 VA
<3 VA
4500W ± 20%
2750W ± 20%
30 min ± 5 min
T1-T2 interrupt for
minimum of 5 sec
3
3 AC 50/60Hz
120V to 632V
5 min delay before
restart attempt
After 10 module trips
T1-T2 interrupt for
minimum of 5 sec
6
I
N
071-0641-00
Kriwan 69SU
120V & 240V
50Hz & 60Hz
250VAC
5 Amps
100 milliamps
5 A, 300 VA
<3 VA
4500W ± 20%
2750W ± 20%
30 min ± 5 min
T1-T2 interrupt for
minimum of 5 sec
Non Phase Sensing
Non Phase Sensing
Non Phase Sensing
Non Phase Sensing
Non Phase Sensing
AE-1318 R1

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