Install Instructions

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