Wiring Diagrams
11
Reversing with 2 series contactors
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
N
22
23
24
28
29
30
31
32
M
L1 L2 L3
21
Control supply before contactors
C
1
C
2
Mechanical Interlock
The start-stop control is by a N.O auxiliary contact in
each of the two series contactors C
1
& C
2
. Closure of
either contactor will supply main power and a start
signal to the RVS-DN.
Control voltage, obtained from main, must match the
starter’s Control Supply voltage.
Note:
1. It is recommended to employ a mechanical
interlock between the Forward and Reverse
Contactors.
2. It is required to delay the transfer between
opening of one contactor and closing of
second contactor.
3. Phase Sequence fault must be disabled to
operate Reversing Contactors at the Line
Input of the soft-starter.
Two Speed Motor
M
13 15
14 16
13 15
14 16
Low
Speed
High
Speed
1
2
Used for Two Speed Motors:
* When soft start is required during transfer from low
to high speed, the RVS-DN should be installed
downstream to the high speed contactor (marked 1) and
operated by its auxiliary contact (13-14).
* When soft start is required for both low and high
speeds, the RVS-DN should be mounted before both
contactors (marked 2) and operated by each of the
downstream contactors (13-14 of each contactor).
Note: The RVS-DN should be sized for
appropriate motor rating of either the low
or the high speed.
If two different motor ratings and/or starting
characteristics are required, for example, higher Initial
Voltage and Current Limit for high speed, use the Dual
Adjustment feature (see Dual Adjustment – page 21)
which allows two different settings of:
* Initial Voltage
* Current Limit
* Acceleration Time
* Deceleration Time
* Motor FLA.
An additional N.O. contact (15-16) on the high-speed
contactor should act as the Dual Adjustment Switch. It
should close simultaneously with 13-14 of the same
contactor to start the RVS-DN and to switch to the
Dual Adjustment settings.
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