58
STARTING PROCEDURE
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8.4.3
Special starting
±
Using Dual Adjustment
For using DUAL ADJUSTMENT automatically, connect AUX. RELAY in series to Aux. Input as shown in
section
8.4.3.1 on page 59.
Program PROG. AUX. RELAY to IMMEDIATE and program RELAY ON DELAY to tx.
Program PROG. INPUT C1 to DUAL ADJUSTMENT.
Program Standard parameters and DUAL ADJUSTMENT parameters as shown in the table below.
Using t o starting characteristics, the starter will accelerate to reach 200% current limit. After tx (PROG. AUX.
RELAY DELAY) voltage to PROG. INPUT C1 is switched on, using the DUAL ADJUSTMENT characteristic to
complete acceleration.
Useful to prevent initial high acceleration. (Applications: Submersible pumps, Drum fans with resonating
frequency, etc).
Standard Parameter
Dual Adjustment Parameter
INITIAL VOLTAGE
10%
25%
ACCELERATION TIME
t1 = 2-30 sec
t2 = 2-30 sec
CURRENT LIMIT
200%
300-400%
PROG. AUX. RELAY DELAY
tx = 1-60 sec.
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