AC Semiconductor Motor Controller
(RSE series) Instructions
- AC Semiconductor Motor Controller (RSE series) Instructions
-AC Semiconductor Motor Controller (RSE series) Instructions
-AC Semiconductor Motor Controller (RSE series) Instructions
- AC Semiconductor Motor Controller (RSE series) Instructions
- AC Semiconductor Motor Controller (RSE series) Instructions
Approvals, Norms:
UL, CSA, CE, EN/IEC 60 947-4-2
Part no.........
IMPORTANT
Should you require information about
installation, operation or mainte-
nance of the product that is not cov-
ered in this instruction document you
should refer the matter to an autho-
rised Carlo Gavazzi representative.
The information in this document is
not considered binding on any prod-
uct warranty.
IMPORTANT
Should you require information about
installation, operation or mainte-
nance of the product that is not cov-
ered in this instruction document you
should refer the matter to an autho-
rised Carlo Gavazzi representative.
The information in this document is
not considered binding on any prod-
uct warranty.
IMPORTANT
Should you require information about
installation, operation or mainte-
nance of the product that is not cov-
ered in this instruction document you
should refer the matter to an autho-
rised Carlo Gavazzi representative.
The information in this document is
not considered binding on any prod-
uct warranty.
IMPORTANT
Should you require information about
installation, operation or mainte-
nance of the product that is not cov-
ered in this instruction document you
should refer the matter to an autho-
rised Carlo Gavazzi representative.
The information in this document is
not considered binding on any prod-
uct warranty.
IMPORTANT
Should you require information about
installation, operation or mainte-
nance of the product that is not cov-
ered in this instruction document you
should refer the matter to an autho-
rised Carlo Gavazzi representative.
The information in this document is
not considered binding on any prod-
uct warranty.
IMPORTANT
Should you require information about
installation, operation or mainte-
nance of the product that is not cov-
ered in this instruction document you
should refer the matter to an autho-
rised Carlo Gavazzi representative.
The information in this document is
not considered binding on any prod-
uct warranty.
DIMENSIONS | DIMENSIONS |DIMENSIONS |DIMENSIONS |DIMENSIONS |DIMENSIONS
|DIMENSIONS |
RSE-B
RSE-BS
FUNCTIONAL DIAGRAM | FUNCTIONAL DIAGRAM | FUNCTIONAL DIAGRAM | FUNCTIONAL
DIAGRAM | FUNCTIONAL DIAGRAM | FUNCTIONAL DIAGRAM |
Wire Sizes | Wire Sizes | Wire Sizes | Wire Sizes | Wire Sizes | Wire Sizes | Wire Sizes |
ATTENTION
1.To prevent electrical
shock, disconnect from
power source before in-
stalling or servicing.
2.The bypass relays in the
main circuit may be in an
undefined switching state
due to hand-ling during
shipping. It is recom-
mended to make the first
cycle with the motor dis-
connected, to set the by-
pass relays to a defined
switching state. If not per-
formed, this may cause
unexpected operation of
the motor.
3.The RSE has been de-
signed as Class A equip-
ment. Use of the product in
domestic environments can
cause radio interference.
4.It is important to utilise
this product according to
its specified overvoltage
category.
5. At high ambient tem-
peratures, it is important
to allow sufficient cooling
time between starts.
6.For stand alone devices
or with proper spacing
between the devices, the
maximum ambient tem-
perature is 50°C.
ATTENTION
1.To prevent electrical
shock, disconnect from
power source before in-
stalling or servicing.
2.The bypass relays in the
main circuit may be in an
undefined switching state
due to hand-ling during
shipping. It is recom-
mended to make the first
cycle with the motor dis-
connected, to set the by-
pass relays to a defined
switching state. If not per-
formed, this may cause
unexpected operation of
the motor.
3.The RSE has been de-
signed as Class A equip-
ment. Use of the product in
domestic environments can
cause radio interference.
4.It is important to utilise
this product according to
its specified overvoltage
category.
5. At high ambient tem-
peratures, it is important
to allow sufficient cooling
time between starts.
6.For stand alone devices
or with proper spacing
between the devices, the
maximum ambient tem-
perature is 50°C.
ATTENTION
1.To prevent electrical
shock, disconnect from
power source before in-
stalling or servicing.
2.The bypass relays in the
main circuit may be in an
undefined switching state
due to hand-ling during
shipping. It is recom-
mended to make the first
cycle with the motor dis-
connected, to set the by-
pass relays to a defined
switching state. If not per-
formed, this may cause
unexpected operation of
the motor.
3.The RSE has been de-
signed as Class A equip-
ment. Use of the product in
domestic environments can
cause radio interference.
4.It is important to utilise
this product according to
its specified overvoltage
category.
5. At high ambient tem-
peratures, it is important
to allow sufficient cooling
time between starts.
6.For stand alone devices
or with proper spacing
between the devices, the
maximum ambient tem-
perature is 50°C.
ATTENTION
1.To prevent electrical
shock, disconnect from
power source before in-
stalling or servicing.
2.The bypass relays in the
main circuit may be in an
undefined switching state
due to hand-ling during
shipping. It is recom-
mended to make the first
cycle with the motor dis-
connected, to set the by-
pass relays to a defined
switching state. If not per-
formed, this may cause
unexpected operation of
the motor.
3.The RSE has been de-
signed as Class A equip-
ment. Use of the product in
domestic environments can
cause radio interference.
4.It is important to utilise
this product according to
its specified overvoltage
category.
5. At high ambient tem-
peratures, it is important
to allow sufficient cooling
time between starts.
6.For stand alone devices
or with proper spacing
between the devices, the
maximum ambient tem-
perature is 50°C.
ATTENTION
1.To prevent electrical
shock, disconnect from
power source before in-
stalling or servicing.
2.The bypass relays in the
main circuit may be in an
undefined switching state
due to hand-ling during
shipping. It is recom-
mended to make the first
cycle with the motor dis-
connected, to set the by-
pass relays to a defined
switching state. If not per-
formed, this may cause
unexpected operation of
the motor.
3.The RSE has been de-
signed as Class A equip-
ment. Use of the product in
domestic environments can
cause radio interference.
4.It is important to utilise
this product according to
its specified overvoltage
category.
5. At high ambient tem-
peratures, it is important
to allow sufficient cooling
time between starts.
6.For stand alone devices
or with proper spacing
between the devices, the
maximum ambient tem-
perature is 50°C.
ATTENTION
1.To prevent electrical
shock, disconnect from
power source before in-
stalling or servicing.
2.The bypass relays in the
main circuit may be in an
undefined switching state
due to hand-ling during
shipping. It is recom-
mended to make the first
cycle with the motor dis-
connected, to set the by-
pass relays to a defined
switching state. If not per-
formed, this may cause
unexpected operation of
the motor.
3.The RSE has been de-
signed as Class A equip-
ment. Use of the product in
domestic environments can
cause radio interference.
4.It is important to utilise
this product according to
its specified overvoltage
category.
5. At high ambient tem-
peratures, it is important
to allow sufficient cooling
time between starts.
6.For stand alone devices
or with proper spacing
between the devices, the
maximum ambient tem-
perature is 50°C.
MODE OF OPERATION
Ramp up potentiometer: the motor starting time in
a direct-on-line start depends on the characteristics
of the motor load; the ramp up time must be longer
than this time period so that the bypass relays are
activated after the starting current has dropped to a
steady level.
Ramp down potentiometer (Applicable only for
RSE-B): the motor stopping time may be extended
by gradually reducing the voltage over the ramp
down time.
The actual time taken to start and stop the motor will
vary according to the combinations of above set-
tings and the type of motor load itself.
Initial Torque potentiometer: this adjusts the start-
ing voltage and must be set to enable the motor to
start rapidly. The soft start is a result of both initial
torque and ramp up time adjustments.
MODE OF OPERATION
Ramp up potentiometer: the motor starting time in
a direct-on-line start depends on the characteristics
of the motor load; the ramp up time must be longer
than this time period so that the bypass relays are
activated after the starting current has dropped to a
steady level.
Ramp down potentiometer (Applicable only for
RSE-B): the motor stopping time may be extended
by gradually reducing the voltage over the ramp
down time.
The actual time taken to start and stop the motor will
vary according to the combinations of above set-
tings and the type of motor load itself.
Initial Torque potentiometer: this adjusts the start-
ing voltage and must be set to enable the motor to
start rapidly. The soft start is a result of both initial
torque and ramp up time adjustments.
MODE OF OPERATION
Ramp up potentiometer: the motor starting time in
a direct-on-line start depends on the characteristics
of the motor load; the ramp up time must be longer
than this time period so that the bypass relays are
activated after the starting current has dropped to a
steady level.
Ramp down potentiometer (Applicable only for
RSE-B): the motor stopping time may be extended
by gradually reducing the voltage over the ramp
down time.
The actual time taken to start and stop the motor will
vary according to the combinations of above set-
tings and the type of motor load itself.
Initial Torque potentiometer: this adjusts the start-
ing voltage and must be set to enable the motor to
start rapidly. The soft start is a result of both initial
torque and ramp up time adjustments.
MODE OF OPERATION
Ramp up potentiometer: the motor starting time in
a direct-on-line start depends on the characteristics
of the motor load; the ramp up time must be longer
than this time period so that the bypass relays are
activated after the starting current has dropped to a
steady level.
Ramp down potentiometer (Applicable only for
RSE-B): the motor stopping time may be extended
by gradually reducing the voltage over the ramp
down time.
The actual time taken to start and stop the motor will
vary according to the combinations of above set-
tings and the type of motor load itself.
Initial Torque potentiometer: this adjusts the start-
ing voltage and must be set to enable the motor to
start rapidly. The soft start is a result of both initial
torque and ramp up time adjustments.
MODE OF OPERATION
Ramp up potentiometer: the motor starting time in
a direct-on-line start depends on the characteristics
of the motor load; the ramp up time must be longer
than this time period so that the bypass relays are
activated after the starting current has dropped to a
steady level.
Ramp down potentiometer (Applicable only for
RSE-B): the motor stopping time may be extended
by gradually reducing the voltage over the ramp
down time.
The actual time taken to start and stop the motor will
vary according to the combinations of above set-
tings and the type of motor load itself.
Initial Torque potentiometer: this adjusts the start-
ing voltage and must be set to enable the motor to
start rapidly. The soft start is a result of both initial
torque and ramp up time adjustments.
MODE OF OPERATION
Ramp up potentiometer: the motor starting time in
a direct-on-line start depends on the characteristics
of the motor load; the ramp up time must be longer
than this time period so that the bypass relays are
activated after the starting current has dropped to a
steady level.
Ramp down potentiometer (Applicable only for
RSE-B): the motor stopping time may be extended
by gradually reducing the voltage over the ramp
down time.
The actual time taken to start and stop the motor will
vary according to the combinations of above set-
tings and the type of motor load itself.
Initial Torque potentiometer: this adjusts the start-
ing voltage and must be set to enable the motor to
start rapidly. The soft start is a result of both initial
torque and ramp up time adjustments.
All dimensions in mm
10mm
6
IEC/EN 60 947-4-2
UL/CSA
Maximum size
• Solid 0.5...2.5mm2
• Finely stranded
with end sleeve 0.5...2.5mm2
• Stranded 0.5...2.5mm2
L1, T1
L2, T2
L3, T3
A1, A2, A3 max. 0.5Nm
max. 4.4lb.in
Note: Use 60 or 75˚C copper conductors only
Note: Use 60 or 75˚C copper conductors only
Note: Use 60 or 75˚C copper conductors only
Note: Use 60 or 75˚C copper conductors only
Note: Use 60 or 75˚C copper conductors only
Note: Use 60 or 75˚C copper conductors only
UWV
A3
A2
A1
L1 L3L2
U/
T1 W/
T3
V/
T2
L1 L3L2
Uc
110-480 V
24-110 V
0
21 End of ramp
11 Alarm
22 C
RSE-B(181108).eng.qxd:Layout 2 2/12/08 11:15 Page 1
Applications | Applications | Applications | Applications ....
Operation Diagrams | Operation Diagrams |Operation Diagrams |Operation Diagrams
|Operation Diagrams |Operation Diagrams |
1L1 3L2 5L3
L1 L2 L3
A1
A2
A3
U/T1 U/T2 W/T3
M
S1
I>I>I>
~
L1 L2 L3L1 L2 L3
1C1C
L1 L2 L3 L1 L2 L3
MM
U/T1 U/T2 W/T3
U/T1 U/T2 W/T3
A1
A2
A3
L1 L2 L3L1 L2 L3 N
L1 L2 L3 L1 L2 L3
MM
U/T1 U/T2 W/T3
U/T1 U/T2 W/T3
A2
A3
A1
LN
L1/L
T1/T T2/N
LN
L1/L L2/N L3
A1
A3
MM
T1/T T2/N
C1 C1
L2/N L3
T3T3
A2
LN
L1 L2/N L3
A1
A2
A3
M
T1/T T2/N
S1
C1
T3
/L
Fig. 1 Fig. 2
Fig. 3
Fig. 5
Fig. 4
Time
Motor voltage
100%
1Ramp-up: 0.5 - 6.5s. Time from zero load voltage to full load voltage.
Initial torque: 0 - 85% voltage at the start of the ramp-up function.
Ramp-down: 0.5 - 8.0s. Time from full load voltage to zero load current.
Applicable only for RSE-B
2
3
1
2
3
Changing from Direct ON Line start
to soft start (Line controlled soft-
start) (Fig. 1, Fig. 2 and Fig. 3)
Changing a Direct On Line start into a soft
start is very simple with the RSE soft-start-
ing relay:
1) Cut the cable to the motor and insert the
RSE relay.
2) Connect control input to two of the in-
coming lines.
Set initial torque to mini-
mum
and ramp up and down to
maximum. Set Initial Torque to minimum
and ramp-up to maximum for the RSE-
BS, while ramp -up and down for the
RSE-B.
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 in-
sulate the motor from the mains. Contactor
C1 is therefore needed as a service switch
for the motor.
Soft-start and soft-stop (Fig. 4 & Fig. 5)
When S1 is closed, soft-start of the motor
will be performed according to the setting
of the ramp-up potentiometer and the set-
ting of the initial torque potentiometer (for
both the RSE-B and RSE-BS).
When S1 is opened, soft-stop will be per-
formed according to the setting of the
ramp-down potentiometer (for RSE-B
only).
Time between rampings
To prevent the semiconductors from over-
heating, a certain time between ramping
should be allowed. The time between
rampings depends on the motor current
during ramping and ramp time (see tables
below).
Note:
Table is valid for ambient temperature
25°C. For higher ambient temperature add
5%/°C to values in the tables. The shaded
areas in the tables are for blocked rotor. Do
not repeat rampings with blocked rotor.
FUSING CONSIDERATIONS
The motor controller provides by-passing
of the semiconductors during running op-
eration. Therefore the semiconductors
can only be damaged by short-circuit cur-
rents during 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 di-
rectly to earth as some other types of
loads, e.g. heater bands. In a failing motor
there will always be some part of a winding
to limit the fault current. If the motor is in-
stalled in an environment where the supply
to the motor cannot be damaged, the short
circuit protection can be considered to be
acceptable if the controller is protected by
a 3-pole thermal-magnetic overload relay
(see table below).
If the risk of short circuit of the motor cable,
the controller or the load exists, then the
con-troller must be protected by ultrafast
fuses, e.g. for a 3 A type: Ferraz 6.9 gRB
10-10, for an 12 A type: Ferraz 6.9 gRB 10-
25. Fuseholder type CMS10 1P.
Changing from Direct ON Line start
to soft start (Line controlled soft-
start) (Fig. 1, Fig. 2 and Fig. 3)
Changing a Direct On Line start into a soft
start is very simple with the RSE soft-start-
ing relay:
1) Cut the cable to the motor and insert the
RSE relay.
2) Connect control input to two of the in-
coming lines.
Set initial torque to mini-
mum
and ramp up and down to
maximum. Set Initial Torque to minimum
and ramp-up to maximum for the RSE-
BS, while ramp -up and down for the
RSE-B.
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 in-
sulate the motor from the mains. Contactor
C1 is therefore needed as a service switch
for the motor.
Soft-start and soft-stop (Fig. 4 & Fig. 5)
When S1 is closed, soft-start of the motor
will be performed according to the setting
of the ramp-up potentiometer and the set-
ting of the initial torque potentiometer (for
both the RSE-B and RSE-BS).
When S1 is opened, soft-stop will be per-
formed according to the setting of the
ramp-down potentiometer (for RSE-B
only).
Time between rampings
To prevent the semiconductors from over-
heating, a certain time between ramping
should be allowed. The time between
rampings depends on the motor current
during ramping and ramp time (see tables
below).
Note:
Table is valid for ambient temperature
25°C. For higher ambient temperature add
5%/°C to values in the tables. The shaded
areas in the tables are for blocked rotor. Do
not repeat rampings with blocked rotor.
FUSING CONSIDERATIONS
The motor controller provides by-passing
of the semiconductors during running op-
eration. Therefore the semiconductors
can only be damaged by short-circuit cur-
rents during 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 di-
rectly to earth as some other types of
loads, e.g. heater bands. In a failing motor
there will always be some part of a winding
to limit the fault current. If the motor is in-
stalled in an environment where the supply
to the motor cannot be damaged, the short
circuit protection can be considered to be
acceptable if the controller is protected by
a 3-pole thermal-magnetic overload relay
(see table below).
If the risk of short circuit of the motor cable,
the controller or the load exists, then the
con-troller must be protected by ultrafast
fuses, e.g. for a 3 A type: Ferraz 6.9 gRB
10-10, for an 12 A type: Ferraz 6.9 gRB 10-
25. Fuseholder type CMS10 1P.
Changing from Direct ON Line start
to soft start (Line controlled soft-
start) (Fig. 1, Fig. 2 and Fig. 3)
Changing a Direct On Line start into a soft
start is very simple with the RSE soft-start-
ing relay:
1) Cut the cable to the motor and insert the
RSE relay.
2) Connect control input to two of the in-
coming lines.
Set initial torque to mini-
mum
and ramp up and down to
maximum. Set Initial Torque to minimum
and ramp-up to maximum for the RSE-
BS, while ramp -up and down for the
RSE-B.
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 in-
sulate the motor from the mains. Contactor
C1 is therefore needed as a service switch
for the motor.
Soft-start and soft-stop (Fig. 4 & Fig. 5)
When S1 is closed, soft-start of the motor
will be performed according to the setting
of the ramp-up potentiometer and the set-
ting of the initial torque potentiometer (for
both the RSE-B and RSE-BS).
When S1 is opened, soft-stop will be per-
formed according to the setting of the
ramp-down potentiometer (for RSE-B
only).
Time between rampings
To prevent the semiconductors from over-
heating, a certain time between ramping
should be allowed. The time between
rampings depends on the motor current
during ramping and ramp time (see tables
below).
Note:
Table is valid for ambient temperature
25°C. For higher ambient temperature add
5%/°C to values in the tables. The shaded
areas in the tables are for blocked rotor. Do
not repeat rampings with blocked rotor.
FUSING CONSIDERATIONS
The motor controller provides by-passing
of the semiconductors during running op-
eration. Therefore the semiconductors
can only be damaged by short-circuit cur-
rents during 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 di-
rectly to earth as some other types of
loads, e.g. heater bands. In a failing motor
there will always be some part of a winding
to limit the fault current. If the motor is in-
stalled in an environment where the supply
to the motor cannot be damaged, the short
circuit protection can be considered to be
acceptable if the controller is protected by
a 3-pole thermal-magnetic overload relay
(see table below).
If the risk of short circuit of the motor cable,
the controller or the load exists, then the
con-troller must be protected by ultrafast
fuses, e.g. for a 3 A type: Ferraz 6.9 gRB
10-10, for an 12 A type: Ferraz 6.9 gRB 10-
25. Fuseholder type CMS10 1P.
Changing from Direct ON Line start
to soft start (Line controlled soft-
start) (Fig. 1, Fig. 2 and Fig. 3)
Changing a Direct On Line start into a soft
start is very simple with the RSE soft-start-
ing relay:
1) Cut the cable to the motor and insert the
RSE relay.
2) Connect control input to two of the in-
coming lines.
Set initial torque to mini-
mum
and ramp up and down to
maximum. Set Initial Torque to minimum
and ramp-up to maximum for the RSE-
BS, while ramp -up and down for the
RSE-B.
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 in-
sulate the motor from the mains. Contactor
C1 is therefore needed as a service switch
for the motor.
Soft-start and soft-stop (Fig. 4 & Fig. 5)
When S1 is closed, soft-start of the motor
will be performed according to the setting
of the ramp-up potentiometer and the set-
ting of the initial torque potentiometer (for
both the RSE-B and RSE-BS).
When S1 is opened, soft-stop will be per-
formed according to the setting of the
ramp-down potentiometer (for RSE-B
only).
Time between rampings
To prevent the semiconductors from over-
heating, a certain time between ramping
should be allowed. The time between
rampings depends on the motor current
during ramping and ramp time (see tables
below).
Note:
Table is valid for ambient temperature
25°C. For higher ambient temperature add
5%/°C to values in the tables. The shaded
areas in the tables are for blocked rotor. Do
not repeat rampings with blocked rotor.
FUSING CONSIDERATIONS
The motor controller provides by-passing
of the semiconductors during running op-
eration. Therefore the semiconductors
can only be damaged by short-circuit cur-
rents during 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 di-
rectly to earth as some other types of
loads, e.g. heater bands. In a failing motor
there will always be some part of a winding
to limit the fault current. If the motor is in-
stalled in an environment where the supply
to the motor cannot be damaged, the short
circuit protection can be considered to be
acceptable if the controller is protected by
a 3-pole thermal-magnetic overload relay
(see table below).
If the risk of short circuit of the motor cable,
the controller or the load exists, then the
con-troller must be protected by ultrafast
fuses, e.g. for a 3 A type: Ferraz 6.9 gRB
10-10, for an 12 A type: Ferraz 6.9 gRB 10-
25. Fuseholder type CMS10 1P.
Changing from Direct ON Line start
to soft start (Line controlled soft-
start) (Fig. 1, Fig. 2 and Fig. 3)
Changing a Direct On Line start into a soft
start is very simple with the RSE soft-start-
ing relay:
1) Cut the cable to the motor and insert the
RSE relay.
2) Connect control input to two of the in-
coming lines.
Set initial torque to mini-
mum
and ramp up and down to
maximum. Set Initial Torque to minimum
and ramp-up to maximum for the RSE-
BS, while ramp -up and down for the
RSE-B.
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 in-
sulate the motor from the mains. Contactor
C1 is therefore needed as a service switch
for the motor.
Soft-start and soft-stop (Fig. 4 & Fig. 5)
When S1 is closed, soft-start of the motor
will be performed according to the setting
of the ramp-up potentiometer and the set-
ting of the initial torque potentiometer (for
both the RSE-B and RSE-BS).
When S1 is opened, soft-stop will be per-
formed according to the setting of the
ramp-down potentiometer (for RSE-B
only).
Time between rampings
To prevent the semiconductors from over-
heating, a certain time between ramping
should be allowed. The time between
rampings depends on the motor current
during ramping and ramp time (see tables
below).
Note:
Table is valid for ambient temperature
25°C. For higher ambient temperature add
5%/°C to values in the tables. The shaded
areas in the tables are for blocked rotor. Do
not repeat rampings with blocked rotor.
FUSING CONSIDERATIONS
The motor controller provides by-passing
of the semiconductors during running op-
eration. Therefore the semiconductors
can only be damaged by short-circuit cur-
rents during 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 di-
rectly to earth as some other types of
loads, e.g. heater bands. In a failing motor
there will always be some part of a winding
to limit the fault current. If the motor is in-
stalled in an environment where the supply
to the motor cannot be damaged, the short
circuit protection can be considered to be
acceptable if the controller is protected by
a 3-pole thermal-magnetic overload relay
(see table below).
If the risk of short circuit of the motor cable,
the controller or the load exists, then the
con-troller must be protected by ultrafast
fuses, e.g. for a 3 A type: Ferraz 6.9 gRB
10-10, for an 12 A type: Ferraz 6.9 gRB 10-
25. Fuseholder type CMS10 1P.
Changing from Direct ON Line start
to soft start (Line controlled soft-
start) (Fig. 1, Fig. 2 and Fig. 3)
Changing a Direct On Line start into a soft
start is very simple with the RSE soft-start-
ing relay:
1) Cut the cable to the motor and insert the
RSE relay.
2) Connect control input to two of the in-
coming lines.
Set initial torque to mini-
mum
and ramp up and down to
maximum. Set Initial Torque to minimum
and ramp-up to maximum for the RSE-
BS, while ramp -up and down for the
RSE-B.
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 in-
sulate the motor from the mains. Contactor
C1 is therefore needed as a service switch
for the motor.
Soft-start and soft-stop (Fig. 4 & Fig. 5)
When S1 is closed, soft-start of the motor
will be performed according to the setting
of the ramp-up potentiometer and the set-
ting of the initial torque potentiometer (for
both the RSE-B and RSE-BS).
When S1 is opened, soft-stop will be per-
formed according to the setting of the
ramp-down potentiometer (for RSE-B
only).
Time between rampings
To prevent the semiconductors from over-
heating, a certain time between ramping
should be allowed. The time between
rampings depends on the motor current
during ramping and ramp time (see tables
below).
Note:
Table is valid for ambient temperature
25°C. For higher ambient temperature add
5%/°C to values in the tables. The shaded
areas in the tables are for blocked rotor. Do
not repeat rampings with blocked rotor.
FUSING CONSIDERATIONS
The motor controller provides by-passing
of the semiconductors during running op-
eration. Therefore the semiconductors
can only be damaged by short-circuit cur-
rents during 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 di-
rectly to earth as some other types of
loads, e.g. heater bands. In a failing motor
there will always be some part of a winding
to limit the fault current. If the motor is in-
stalled in an environment where the supply
to the motor cannot be damaged, the short
circuit protection can be considered to be
acceptable if the controller is protected by
a 3-pole thermal-magnetic overload relay
(see table below).
If the risk of short circuit of the motor cable,
the controller or the load exists, then the
con-troller must be protected by ultrafast
fuses, e.g. for a 3 A type: Ferraz 6.9 gRB
10-10, for an 12 A type: Ferraz 6.9 gRB 10-
25. Fuseholder type CMS10 1P.
M
3~
M
Mains Ue
Control input Uc
RSE-B
RSE-BS
LED
LED
LED
RSE-B(181108).eng.qxd:Layout 2 2/12/08 11:15 Page 2
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1
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2
CARLO GAVAZZI RSE1112-BS Owner's manual
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