Specifications are subject to change without notice (06.10.2003)
1
Type
Rated operational
Rated operational
Control voltage
Control relay
voltage U
e
current I
e
U
c
RSE:
22: 127/220 VACrms, 50/60 Hz 25: 25 A
-C: 24 to 110 VAC/DC Blank: No relay mounted
E-series,
40: 230/400 VACrms, 50/60 Hz
& 110 to 480 VAC
1: 2 control relays mounted
motor controller 48: 277/480 VACrms, 50/60 Hz
60: 346/600 VACrms, 50/60 Hz
Solid State Relay
Motor controller
E-line housing
Rated operational voltage
Rated operational current
Control voltage
Control relay (option)
Shape of ramp
Ordering Key
Motor Controllers
AC Semiconductor Motor Controller
Types RSE 22 25 - C., RSE 4. 25 - C., RSE 60 25 - C.
Soft starting and stopping of 3-phase
squirrel cage motors
Rated operational voltage: Up to 600 VACrms, 50/60 Hz
Rated operational current: 25 AAC 53 b
Potential-free control input
LED-indications for power supply, ramping,
bypassing relays and overheating
Self protection against overheating
Optional relay output for end of ramp and overheating
alarm, optional wrong phase sequence LED indication
(-C10)
Transient overvoltage protection built-in
Integral bypassing of semiconductors
Product Description
Compact easy-to-use AC
semiconductor motor con-
troller. With this controller 3-
phase motors with nominal
load currents up to 25 A can
be soft-started and/or soft-
Type Selection
stopped. Starting and stop-
ping time as well as initial
torque can be independently
adjusted by built-in potentio-
meters.
Input Specifications (Control Input)
Control voltage U
c
A1-A2:
24 - 110 VAC/DC 15%,
approx. 12 mA
A1-A3:
110 - 480 VAC 15%,
approx. 5 mA
Rated insulation voltage
630 V rms
Overvoltage cat. III
(IEC 60664)
Dielectric strength
Dielectric voltage
2 kVAC (rms)
Rated impulse withstand volt. 4 kV (1.2/50 s)
Output Specifications
Utilization category
AC-53b Integral bypassing
of semiconductors
Overload current profile
(overload relay trip class)
25 A: AC-53b: 4-3: 120
RSE 40 25 -C 1X
Rated operational current I
e
Motor Rating
5.5 kW/10 HP
11 kW/15 HP
15 kW/20 HP
18.5 kW/25 HP
25 AAC 53b
RSE2225-C
RSE4025-C
RSE4825-C
RSE6025-C
RSE2225-C10
RSE4025-C10
RSE4825-C10
RSE6025-C10
Selection Guide
2
Specifications are subject to change without notice (06.10.2003)
Dimensions
RSE 22 25 - C., RSE 4. 25 - C., RSE 60 25 - C .
Power supply
Overvoltage cat. III (IEC 60664)
Rated operational volt. (U
e
)
through terminals L1-L2-L3
(IEC 60038)
22
127/220 VAC rms 15%
50/60 Hz -5/+5 Hz
40
230/400 VAC rms 15%
50/60 Hz -5/+5 Hz
48
277/480 VAC rms 15%
50/60 Hz -5/+5 Hz
60
346/600 VAC rms 15%
50/60 Hz -5/+5 Hz
Voltage interruption
40 ms
Dielectric voltage
2 kV (rms)
Rated impulse withstand volt. 4 kV (1.2/50 s)
Rated operational power
5 VA
supplied from
L1-L2
Accuracy
Ramp up
10 10% on max.
0.5 s on min.
Ramp down
20 10% on max.
0.5 s on min.
Initial torque
50% 5% on max.
< 5% on min.
EMC
Electromagnetic Compatibility
Immunity
acc. to EN 50 082-2
Indication for
Power supply ON
LED, green
Ramping
LED, yellow (flashing)
Bypassing relay
LED, yellow (constant ON)
Wrong phase sequence
LED, red (flashing)
Overheated
LED, red (constant ON)
Environment
Degree of protection
IP 20
Pollution degree
3
Operating temperature
-20 to +50C (-4 to +122F)
Storage temperature
-50 to +85C (-58 to +185F)
Terminals
Screw with captive wire
clamp
Control terminals nominal
2.5 mm
2
, AVG 14
Min.
0.5 mm
2
, AWG 20
Mounting torque max.
0.6 Nm
Power terminals nominal
10 mm
2
, or 2 x 6 mm
2
AWG 6 or 2 x AWG 10
Min.
1 mm
2
, AWG 16
Mounting torque max.
2.0 Nm
Approval
UL (listed), CSA
CE-marking
Yes
Mode of Operation
This motor controller is intended
to be used to softstart/ stop 3-
phase squirrel cage induction
motors and thereby reduce the
stress or wear on gear and
belt/chain drives and to give
smooth operation of machines.
Soft starting and or stopping is
achieved by controlling the
motor voltage. During running
operation the semiconductor is
bypassed by an internal electro-
mechanical relay.
The initial torque can be adjust-
ed from 5 to 50% of the nominal
torque.
The soft-start time can be ad-
justed from 0.5 to 10 s and 0.5
to 20 s for the soft-stop respec-
tively.
A green LED indicates supply.
The yellow LED is flashing dur-
ing the ramping up or down.
After the ramping when the
semiconductors are bypassed
the yellow LED lights constantly.
The red LED is flashing when
the sequency is different from
L1-L2-L3 (only in -C10). If the
softstarter is overheated the red
LED is turned on constantly.
Alarm handling:
Over temperature: The RSE will
not start if the heatsink has an
internal temperature which is
exceeding approx 100C. When
over temperature occurs while
the softstarter is not ramping (1)
or while the bypass Relays are
activated (2) the following will
happen:
1) The softstarter will not ramp
up and alarm relay is deacti-
vated (contact open) - Reset
takes place when the temper-
ature drops below the critical
level and only if the supply is
interrupted and reapplied.
2) The alarm relay will deactivate
(open) to indicate fault and
when the softstarter is not
ramping the softstarter will
react as described in 1).
Sequence: By wrong sequence
at connection of the power the
RSE will start normally but the
alarm relay will not activate.
(Contacts open).
Functional Diagram
U
W
V
A3
A2
A1
L1
L3
L2
U/
T1
W/
T3
V/
T2
L1
L3
L2
Uc
110-480 V
24-110 V
0
21 End of ramp
11 Alarm
22 C
Supply Specifications
General Specifications
All dimensions in mm
Specifications are subject to change without notice (06.10.2003)
3
Housing material
PC/ABS Blend
Colour
Light grey
Terminal block
PBTP
Colour
Black
Bottom clips
POM
Colour
Black
Diode cover
PC
Colour
Grey Transparent
Front knob
PC
Colour
Black
Housing Specifications
Rated opera-
I
2
t for fusing
I
TSM
dI/dt
tional current
t = 1 - 10 ms
25 A
1250 A
2
s
500 Ap
100 A/s
Semiconductor Data
Operation Diagrams 2 and 3
Operation Diagram 1
Time
Motor voltage
100%
1
Ramp-up time 0.5 to 10 s. Time from zero load voltage to full load
voltage.
2
Ramp-down time 0.5 to 20 s. Time from full load voltage to zero load
voltage.
3
Initial torque 5 to 50% voltage at the start of the ramp-up function.
Mains
Overheated
LED, green
RSE 22 25 - C., RSE 4. 25 - C., RSE 60 25 - C .
Sequence L1-L2-L3
Control input Uc
LED, yellow
LED, red
M
3~
Alarm reset
End of ramp
(Terminals 21, 11, 22 only on C1 types)
150
4 min
8 min
20 min
N/A
N/A
125
3 min
6 min
14 min 19 min
N/A
100
2 min
4 min
9 min
12 min 18 min
75
1 min
2 min
5 min
7 min
10 min
50
27 sec 53 sec
2 min
3 min
4 min
25
7 sec
13 sec 33 sec 47 sec 67 sec
1
2
5
7
10
Ramp time [sec.]
I ramp [A]
To prevent the semiconduc-
tors from overheating, a cer-
tain time between ramping
should be allowed. The time
between rampings depends
on the motor current during
ramping and ramp time (see
table).
Note:
Table is valid for ambient
temperature 25C. For higher
ambient temperature add
5%/C to values in the table.
The shaded areas in the table
are for blocked rotor. Do not
repeat rampings with blocked
rotor.
Time between Rampings
4
Specifications are subject to change without notice (06.10.2003)
RSE 22 25 - C., RSE 4. 25 - C., RSE 60 25 - C .
Fusing Considerations
The motor controller provides
by-passing of the semicon-
ductors during running opera-
tion. Therefore the semicon-
ductors can only be damaged
by short-circuit currents dur-
ing ramp-up and ramp-down
function.
A 3-phase induction motor
with correctly installed and
adjusted overload protection
does not short totally between
lines or directly to earth as
some other types of loads, eg
heater bands. In a failing mo-
tor there will always be some
part of a winding to limit the
fault current. If the motor is
installed in an environment
where the supply to the motor
cannot be damaged, the short
circuit protection can be con-
sidered to be acceptable if the
controller is protected by a 3-
pole thermal-magnetic over-
load relay.
Applications
Changing from Direct ON
Line start to soft start
(Line controlled soft-start)
(Fig. 1)
Changing a Direct On Line start
into a soft start is very simple
with the RSE soft-starting re-
lay:
1) Cut the cable to the motor
and insert the RSE relay.
2) Connect control input to two
of the incoming lines. Set
initial torque to minimum and
ramp up and down to maxi-
mum.
3) Power up again - adjust the
start torque so the motor
starts turning immediately
after power is applied, and
adjust ramp time to the
appropriate value.
When C1 is operated, the
motor controller will perform
soft-start of the motor. When
C1 is switched off, the motor
will stop, the motor controller
will reset and after 0.5 s a new
soft-start can be performed.
Please note that the controller
does not insulate the motor
from the mains. Contactor C1
is therefore needed as a ser-
vice switch for the motor.
Fig. 1
1L1 3L2 5L3
L1 L2 L3
A1
A2
A3
U/T1 U/T2 W/T3
M
Fig. 2
S1
I >
I >
I >
~
L1 L2 L3
L1 L2 L3
C1
C1
L1 L2 L3
L1 L2 L3
M
M
U/T1 U/T2 W/T3
U/T1 U/T2 W/T3
A1
A2
A3
Soft-start and soft-stop
(Fig. 2)
When S1 is closed, soft-start
of the motor will be performed
according to the setting of the
ramp-up potentiometer and
the setting of the initial torque
potentiometer. When S1 is
opened, soft-stop will be per-
formed according to the set-
ting of the ramp-down
potentiometer.
Motor full load current (AACrms)
12-16
16-20
20-25
Overload relay type :GV 2-
M 16
M 20
M 22
Manufacturer : Telemecanique
M 20
M 21
Overload relay type: MS 325-
12.5
20
25
Manufacturer : ABB
16
Motor protection circuit breaker type KTA3-25-
16
20
25
Manufacturer : Allan Bradley/Sprecher + Schuh
Motor controller type :
127/220 V mains
RSE 22 25 - C
230/400 V mains
RSE 40 25 - C
277/488 V mains
RSE 48 25 - C
347/600 V mains
RSE 60 25 - C
Recommended thermal-magnetic overload relay
Selection Chart
Thermal-magnetic overload relay and motor controller
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