CARLO GAVAZZI RSBS Series User manual
1
Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
1-phase compressor soft starter
Benets
• Easy to use. No user adjustments required.
• Space saving solution. Compact DIN or panel mount
versions available. Integrated start capacitor.
• Integrated diagnostics. Detection for voltage dips and
interruptions. Detection of welded relay contacts.
• Adjusts to load requirements. The built-in HP function
ensures that the compressor starts in < 1 second even
under high pressure dierence during start.
• Guided model selection. Easy to use online
selection tool to select the appropriate soft starter
model depending on the compressor brand/model.
http://gavazziautomation.com/nsc/HQ/EN/soft_starters.
• Reduces light icker. RSBS reduces the compressor
start current by >50% to reduce light ickering.
Description
The RSBS....V23C.. is a single phase soft starter for 1
phase compressors up to 32 Arms.
The RSBS can limit inrush currents to 45 AACrms (under
balanced conditions) and has a maximum ramp-up time of
600 ms. A special function (HP function) allows the RSBS to
start compressors, even when pressures are not balanced,
by allowing a maximum current of 80 AACrms. Following
the ramp-up, the semiconductors will be bypassed by the
internal electromechanical relay. The RSBS is rated for a
maximum of 10 starts per hour (evenly distributed).
RSBS
Main features
• Limitation of compressor starting current
• Ramp-up time optimised to 600 ms
• Anti-short cycling function with built-in delay between starts
• Voltage dips/interruptions detection during bypass state
Applications
• Scroll compressors, piston compressors
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Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
Enter the code entering the corresponding option instead of .
Order code
RSBS 23 32 A2 V23 HP
Code Option Description Notes
R-Soft starter
S-
B-Compressor soft starter
S-Single phase control
23 -230 VAC Rated operational voltage
32 -32 Arms Rated operational current
A2 -230 VAC Rated control voltage
V-Options
2-Auxiliary relay output Alarm status indication
3-Third generation
C24 Internal start capacitor: 200 – 240 μF
C17 Internal start capacitor: 145 – 175 μF
C10 Internal start capacitor: 100 – 140 μF
C00 External start capacitor
HP -Control algorithm for high pressure starts See caution notes
Selection guide
Start capacitor size Part number
200 – 240 μF RSBS2332A2V23C24HP
100 – 140 μF RSBS2332A2V23C10HP
145 – 175 μF RSBS2332A2V23C17HP
External RSBS2332A2V23C00HP
For proper model selection refer to our online soft starter selector tool:
http://www.gavazziautomation.com/nsc/HQ/EN/soft_starters
• The internal relays may be in an undened state due to shocks during transportation. In case both relays are latched in
the ON state, there will be a direct on line start of the compressor, even without a control signal.
• To avoid direct on line start, the user should do an initial power up with no load connected for a period of ≥ 3 seconds.
• Short circuit and overload protection are not provided with the RSBS and must be installed separately.
• The RSBS soft starter is not to be used as a safety device. The RSBS, on its own, cannot guarantee any safety and
therefore other components need to be used to ensure that the system operates safely.
• Repeated starts under unbalanced pressure (resulting in HP starts) will reduce the lifetime of the RSBS.
3
Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
Further reading
Information Where to nd it
RSBS instruction
manual http://cga.pub/?a1f658
Troubleshooting
guide http://cga.pub/?686d1f
CAD drawings
3D (.dwg) - http://cga.pub/?ada314
2D (.dwg) - http://cga.pub/?e0d224
Step (.stp) - http://cga.pub/?f889f6
CARLO GAVAZZI compatible components
Purpose Component name/code Notes
External start capacitor kit STARTCAP-200UF-SMA For RSBS2332A2V23C00HP models
Selection guide
Category Compressor maximum operating current (IMAX) Model selection
Compressors 2.5 - 16 Arms RSBS2332A2V23C10HP
16 - 32 Arms RSBS2332A2V23C24HP
Note: For compressors with IMAX ≥ 25 Arms that start with unequalised pressures (> 5 bar) the model
RSBS2332A2V23C00HP is recommended.
Note: Use a start capacitor with rated voltage of 330 VAC or higher. Start capacitor must also have a 15kΩ (2W) bleed resistor.
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Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
Structure
Element Component Function
ALED indicators Supply (Green). Indicates that the RSBS supply is ON.
BLED indicators
Alarm (Red). Indicates that the RSBS is in alarm. The number of
ashes indicates the alarm type.
Recovery between starts (Orange). Indicates that the recovery time
between starts has not yet elapsed.
Note: During recovery between starts the RSBS will not respond to
control voltage.
COutputs
R: Connection to compressor main winding (R)
Rc: Connection to run capacitor
L / L1: Mains supply connection
N / L2: Supply neutral connection (L2 connection for U.S. applica-
tions)
ON: Control input signal (start signal)
S: Connection to compressor start winding (S)
Sc: Connection to external start capacitor (only for C00 versions)
DAlarm relay
Alarm relay (Changeover)
11, 12: Normally closed (NC)
11, 14: Normally open (NO)
EQR code Scan to link to troubleshooting guide.
ABC D
RSBS2332A2V23C00HP
EABC D
RSBS2332A2V23C..HP
E
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Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
Mode of operation
The RSBS soft starter series works on a current limit algorithm. When control signal is applied via the On terminal, the
RSBS start the ramp-up sequence. The compressor start current is limited to 45 Arms. Once the compressor reaches full
speed, the RSBS automatically detects this condition and switches on the bypass relay to reduce heat dissipation within
the electrical panel. The RSBS will optimise the motor start time to around 600 ms (See Fig. 1).
If the motor does not reach full speed within a maximum of 1 second, the RSBS will trigger the excess ramp-up time alarm
(5 ashes) to protect the internal relay from switching a too high current that would reduce the relay lifetime. The alarm will
self-recover after 5 minutes.
Current limit algorithm
During the ramp-up sequence, the RSBS will check if the motor is rotating. If the RSBS nds that the motor is in locked
rotor condition, it will trigger the HP function after ~ 250 ms (See Fig. 2). During the HP sequence, the RSBS will gradually
increase the current limit setpoint up to a maximum of 80 Arms. This mode of operation is required when the starting pres-
sures are not balanced or where voltage supply is very weak.
Note: Starts under unbalanced pressure conditions can reduce the lifetime of the RSBS due to the higher current owing
through the components. Allow enough time between starts to ensure that starting pressures dierence is kept to a
minimum.
High pressure (HP) function
Current (AAC)
45
Time (ms)
≤ 600
Current (AAC)
HP func�on
80
~ 250 < 1s
Time (ms)
45
End of ramp
Current (AAC)
HP func�on
80
~ 250 < 1s
Time (ms)
45
Fig. 1
Fig. 2
The RSBS series of soft starters is designed for single phase compressors with a maximum start time of 1 second. Typical
applications include scroll and piston compressors.
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Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
Features
Material PA66
Assembly DIN or panel
Touch protection IP20
Weight Approx. 450 g
Overvoltage category II
General data
Fig. 4 RSBS2332A2V23C..HP
Fig. 3 RSBS2332A2V23C00HP
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Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
Ramp-up time ≤ 600 ms
Ramp-down time 0 s
Settings
Operational voltage range 195.5 – 264.5 VAC
Supply current at idle ≤ 15 mA
Blocking voltage 1200 Vp
Rated AC frequency 50/60 Hz (+/- 5 Hz)
Rated insulation voltage 250 VAC
Integrated varistor Yes
Pickup voltage 90 VAC
Drop out voltage 25 VAC
Power supply
Environmental
Operating temperature RSBS2332A2V23C00HP: -20ºC to +65ºC (-4ºF to +149ºF)
RSBS2332A2V23C..HP: -20ºC to +55ºC (-4ºF to + 131ºF)
Storage temperature - 30˚C to + 70˚C (- 22˚F to +158 ˚F)
Relative humidity <95% non condensing @ 40ºC
Pollution degree 2
Installation category II
Installation altitude 0 - 1000 m
Vibration resistance 2 g / axis (2 - 100 Hz, IEC60068-2-6, EN50155, EN61373)
Impact resistance 15/11 g/ms (EN50155, EN61373)
EU RoHS compliant Yes
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Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
Electromagnetic compatibility (EMC) - immunity
Electrostatic discharge (ESD) EN/IEC 61000-4-2
8 kV air discharge, 4 kV contact (PC2)
Radiated radio frequency
EN/IEC 61000-4-3
3 V/m, from 80 MHz to 1 GHz (PC1)
3 V/m, from 2 to 2.7 GHz (PC1)
Electrical Fast Transient (Burst)
EN/IEC 61000-4-4
Output: 2 kV, 5 kHz (PC2)
Input: 1 kV, 5 kHz (PC2)
Conducted Radio Frequency EN/IEC 61000-4-6
3 V/m, from 0.15 to 80 MHz (PC1)
Electrical Surge
EN/IEC 61000-4-5
Output, line to line: 1 kV (PC2)
Output, line to earth: 2 kV (PC2)
Input, line to line: 0.5 kV (PC2)
Input, line to earth: 1 kV (PC2)
Voltage dips and interruptions EN/IEC 61000-4-11
Electromagnetic compatibility (EMC) - emissions
Radio interference eld
emissions (conducted)
CISPR 11, EN/IEC 55011
Class B1
Harmonics IEC/EN 61000-3-21
IEC/EN 61000-3-121
Disturbance power CISPR 14, IEC/EN 55014-11
Flicker IEC/EN 61000-3-111(load conditions apply)
Compatibility and conformity
Conformance IEC/EN 60947-4-2, UL60947-4-2
Approvals
1. Applicable when current limit is ≤ 45 Arms
Note:
• Performance Criteria 1 (PC1): No degradation of performance or loss of function is allowed when the product is operated
as intended.
• Performance Criteria 2 (PC2): During the test, degradation of performance or partial loss of function is allowed. However
when the test is complete the product should return operating as intended by itself.
• Performance Criteria 3 (PC3): Temporary loss of function is allowed, provided the function can be restored by manual
operation of the controls.
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Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
Overload cycle @ 40ºC
surrounding temperature
(acc. to IEC/EN 60947-4-2)
AC53b: 1.9 - 1 : 359
Maximum number of starts/hr
@ rated overload cycle @ 40ºC
surrounding temperature
10 (evenly distributed)
Rated operational current @
40°C 32 Arms
Current limit 45 Arms
Maximum starting current 80 Arms
Minimum load current 2.5 Arms
Minimum time between starts 6 minutes
Minimum time between stop to
start 3 minutes
Outputs
Number of output relay 1
Function of relay Alarm
Rated operational voltage 250 VAC / 30 VDC
Rated insulation voltage 250 VAC
Dielectric withstand voltage 2.5 kV
Overvoltage category II
Type of control circuit Electromechanical relay
Number of contacts 2
Type of contacts Changeover: Normally closed (NC), Normally open (NO)
Type of current AC / DC
Rated operational current 3 Arms @ 250 VAC, 3 Arms @ 30 VDC
Auxiliary relays
Control voltage (Uc) 230 VAC (± 15%)
Control voltage range (Uc) 195.5 – 264.5 VAC
Maximum pick-up voltage 90 VAC
Minimum drop out voltage 25 VAC
Rated AC frequency 50 / 60 Hz (± 5 Hz)
Rated insulation voltage (Ui) 250 VAC
Control input current 3 mArms – 6 mArms
Inputs
10
Carlo Gavazzi Ltd.
RSBS
RSBS DS ENG27/05/20
Performance
Model IEC rated current RSBS2332A2V23Cxx
RSBS 32 Arms 4.4 kW / 5 HP
Current / power ratings: kW and HP @ 40°C
Ratings:
kW rating according to IEC/EN 60947-4-2
Terminal markings
Marking
RConnection to compressor main winding (R)
Rc Connection to run capacitor
L / L1 Mains supply connection
N / L2 Supply neutral connection (L2 connection for U.S. applications)
On Control input signal (start signal)
SConnection to compressor start winding (S)
Sc Connection to external start capacitor
Connection Diagrams
RSBS2332A2V23C..HP RSBS2332A2V23C00HP
This manual suits for next models
4
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