Ingersoll Rand VSD User Manual

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:

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
CCN: 39266143

Kit 1

Kit 2

Drive

Unit

A

A

25A

200A

B

B

50A

400A

C

C

Drive

Unit

100A

600A

Drive

Unit

Direct

Delta
Loop

MD

Direct

Direct

M

Half

*

Direct

Half

*

Direct

M

* 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.

For example: if the motor is 185kW @ 400V (185kW divided by 2 = 92.5kW; use ‘Direct’
90kW @ 400V), select Kit 2, Connection B.

Kit Selection Table

Motor

kW 200V 380V 575V 200V 380V 575V

HP

Direct Delta Loop
250V 460V 250V 460V

Example:

Motor Size 55kW
Voltage 400V

7.5 1B 1A 1A 1A 1A 1A

10

11 1B 1B 1A 1B 1A 1A

15

15 1C 1B 1B 1B 1A 1A

20

18.5 1C 1B 1B 1B 1B 1A

25

22 2A 1C 1B 1C 1B 1A

30

30 2A 1C 1C 1C 1B 1B

40

37 2A 2A 1C 2A 1C 1B

50

45 2B 2A 1C 2A 1C 1B

60

55 2B 2A 2A 2A 1C 1C

75

75 2B 2B 2A 2B 1C 1C

100

90 2C 2B 2A 2B 2A 1C

125

110 2C 2B 2B 2B 2A 2A

150

132 2C 2B 2B 2B 2A 2A

180

165 2C 2C 2B 2C 2B 2A

220

185 2C 2B 2C 2B 2B

250

200 2C 2C 2C 2B 2B

270

250 2C 2C 2C 2B 2B

340

300 2C 2C 2C 2C 2B

400

400 2C 2C 2C

540

500 2C 2C 2C

680

Motor FLC 102A
Sensor Position

Kit
Connection

Direct

2
A

A

1

231

2

34

2

The current sensor is used to detect frequency only; accuracy of current reading is
unimportant. Sensor selection and sensor connection is dependent on the nominal running
current at maximum motor speed. The maximum motor speed current should be
approximately 50% (+-20%) of the current sensor connection rating and the motor minimum
speed current should be no less than 10% the of the current sensor connection rating. The
sensor and frequency detection module are designed to accept motor starting peak current
levels without malfunction or damage.

Installation

35mm

DIN Rail

Mount

VSD Box

X05

182217

+20Vdc

20mm

C
D
V

4

2

+

192120

75mm

80mm

l

a

n
ig
S
d

e

e

p
S

signal

231

Frequency

Detect

Module

564

A

12 3 4

Current
Sensor

1

25A/50A/100A
200A/400A/600A

2

B

C