Section 6, Operation and connection examples – Toshiba VT130G1 User Manual

Page 27

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Section 6

OPERATION AND CONNECTION EXAMPLES

Connection of remote speed reference signals,

a) With variable resistor (3 K H pot.)

NOTE: Disconrect the cover

—^CRF

mounted speed pot. from
terminals CRF, REF, and OV.

3kfì

0.1

b) With curren: input.

20 mA

[;

IRF

c) With voltage input.

NOTE; Disconnect REF lead from

cover mounted pot and

turn pot on. Motor speed

will follow your 0 to 12 V

input signal.

d) Switching between variable resistor and current input.

SW'ON: Variable resistor is

selected.

SW-OFF: 4 to 20 mA current is

selected.

CRF

REF

NOTE; The variable resistor is to be mounted with a switch (SW). 4 to 20 mA

current input is selected when the switch Is turned ok Use

20 mA cur

rent rated switch. For local/remote operation, the standard cover mounted
speed pot has an integral switch which wilt allow the 4-20mA signal to
control the motor SPEED when the pot is in the OFF position.