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CS/CSP/MCS SERIES CURRENT SWITCHES
CSP-NO-AVFD OPERATION
Motor Current vs Frequency
100%
Current
Trip Point @ 40Hz
OFF
0Hz
Frequency
The CSP-NO-AVFD-150A utilizes a proprietary sensing
algorithm to detect belt loss on motors operated by
variable frequency drives.
31-00432M—01
VFD Normal Operation
Trip Area 40Hz Cal
Trip Area 50Hz Cal
VFD Broken Belt
Trip Point @ 50Hz
60Hz
Reliable operation requires variable frequency drive to
increase frequency to a minimum of 40Hz when load is
lost.
Typical load status applications include:
• Proof of flow
• Belt-loss detection
• Coupling shear
Table 2. Specification by Product
Product Number
CS-NO-F-50A
CSP-NO-F-200A
MCS-NO-A-50A
CS-NO-A-50A
CSP-NO-A-100A
CSP-NO-A-50A
CSP-NO-A-150A
CSP-NO-AECM-200A
CSP-NO-AVFD-150A
3PZS
E516382
6
Core
Trip Point
Type
Fixed, 0.25A
SOLID
Fixed, 0.35A
SPLIT
Adjustable,
SOLID
0.75-50FLA
Adjustable,
SOLID
0.75-50FLA
Adjustable,
SPLIT
0.50-100FLA
Adjustable,
SPLIT
0.45-50FLA
Adjustable,
SPLIT
0.50-150FLA
Adjustable,
SPLIT
0.25-3A Trip
Automatically
SPLIT
detected
above 40 Hz
RoHS Compliant
Max
Current
50A
200A
50A
50A
100A
50A
150A
200A
150A
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