Toshiba VT130G1 User Manual

Page 28

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Section 6

e) Switching between two or more variable resistors:

Two or more pots are set at
different frequencies and selected.

Use small current rated relay for

selection.. Disconnect the door
mounted pot from terminals CRF,
REF. and OV

f) Multiple inverter cascading with one setting device:

No 1

uak

Connect 3 K ohm w resistor
between CRF and OV terminal of

each slave unit. Disconnect the

door mounted pots on all units.

g) Multiple inverter cascading from one process signal:

4 to 20 mA input signal cannot be used. Use voltage (0 to 12v) signal only in
to all inverters. Turn door mounted speed pots into OFF position.

h) Selection of a variable resistor other than 3 kn for speed setting.

(3 kn variable resistor is furnished
on inverter door)

-€4e-

Tv^

{

ref

I5v

CRF U 750 n

REF

A 750n fixed resistor is to be used as R1 in the inverter unit so that the REF
value (Vf^Ep) is between 0 and 12V when regulator R2 is 3 kn and the voltage
(Vnep) is divided by R1 and R2.

If the resistance value of the regulator is to be changed, a compensation resistor

R3 is required.