VSD Output Monitoring
The VSD output monitoring kits (for variable speed inverter drive units) are designed to provide a speed (output) feedback signal to the control and monitoring system.
This feature enables the management system to optimize efficiency by accurately monitoring the performance and behavior of a variable speed drive compressor unit.
Specification: |
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Variable Speed Drive |
AC Inverter type (not suitable for DC or SR drives) |
Drive Frequency Range |
3Hz to 400Hz |
Drive Operating Voltage |
200Vac to 575Vac |
Compressor Motor Size |
7.5kW to 500kW |
The VSD output monitoring kit can be fitted to an X - Series Automation CX or VSD Box.
Kit Selection
There are two kits available; each kit is designed to cover a different current range.
To establish the correct kit for an application:
1)Determine the compressor motor kW rating (establish from motor data plate)
2)Determine the motor operating voltage (establish from motor data plate)
3)Check the intended positioning of the kit current sensor and establish if the sensor will be detecting ‘Half Direct’, ‘Direct’ or ‘Delta Loop’ motor current.
4)Use the kit selection table below to determine the appropriate kit (1 or 2) and sensor connection 1, 2 or 3.
CCN: |
39266150 |
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Kit 1 |
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A 25A |
B 50A |
C |
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100A |
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CCN: |
39266143 |
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Kit 2 |
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A |
200A |
B |
400A |
C |
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600A |
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Drive |
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Drive |
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Unit |
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Unit |
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Direct |
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Direct |
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Delta |
M |
D |
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M |
Loop |
Direct |
Drive
Unit
*HalfDirect
*Half |
M |
Direct |
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* If the sensor position is ‘Half Direct’ (each of the three motor phase connections has two wires, and the sensor is placed on one of the two wires) divide the motor kW rating in half before making a ‘Direct’ kit/connection selection. Select the kit for the ‘half’ kW rating – use the nearest kW rating if the ‘half’ rating does not result in an exact match.
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