Control module for reciprocating compressors
ASV101_V1.0.0_PI_2023-03_EN 1
Subject to technical changes
ASV101
1 ASV101
Control module for reciprocating compressors
1.1 Front view
Fig. 1: Front view
1.2 Features
• Driver with electronic relays
• For compressor racks in combination with FRIGOLINK rack master modules HVB-G3/G4,
HVI-G3/G4, HVV-G3/G4 and FVB110B, FVB110-PAT, FVB120B, FVB120-PAT,
FVB140B or FVB140-PAT
• Stepless output control
• One module per compressor
• Operating mode selection by slide switch (EXTERNAL, PWM)
• Switching display by LED
NOTICE
• Please observe the detailed descriptions in the chapters of the FRIGOLINK system manual.
Control module for reciprocating compressors
2 ASV101_V1.0.0_PI_2023-03_EN
Subject to technical changes
ASV101
1.3 Safety instructions
Writing conventions
CAUTION • Avoid the described hazard: Otherwise minor or medium bodily injury or property damage will
result.
WARNING • Avoid the described hazard: Otherwise there is danger from electric voltage that can lead to
death or serious bodily injury.
For your safety
For safe operation and to avoid personal injury and equipment damage through operator error, always
read these instructions, become familiar with the device, and follow all safety instructions on the prod-
uct and in this document, as well as the safety guidelines of Wurm GmbH & Co. KG Elektronische
Systeme. Keep these instructions ready to hand for quick reference and pass them on with the device
if the product is sold.
Wurm GmbH & Co. KG Elektronische Systeme accepts no liability in the case of improper use or use
for purposes other than the intended purpose.
WARNING DANGER TO LIFE FROM ELECTRIC SHOCK AND/OR FIRE!
• Switch off the power to the entire plant when carrying out installation, wiring or disassembly work!
Otherwise a mains voltage may still be present even if the control voltage is switched off.
• The wiring of the device must be carried out only by qualified electricians!
• Use the correct tools for any work!
• Check the entire wiring after connection!
• Observe the maximum loads for all connections!
• Never expose the device to moisture, for example due to condensation or cleaning agents.
• Stop operating the device if it is faulty or damaged and its safe operation is compromised!
• Do not open the device.
• Do not repair the device yourself! If the device requires repairs, send it in with an exact descrip-
tion of the fault!
Software revision and validity of documentation
Any software versions not listed are special solutions for individual projects and are not described in detail in this
document. This document will automatically cease to be valid if a new technical description is issued.
Manufacturer: Wurm GmbH & Co. KG Elektronische Systeme, Morsbachtalstraße 30, D-42857 Remscheid
You can find more information on our website at www.wurm.de
Target group This manual is intended for "service technician" personnel.
Intended use The ASV101 is a module for controlling the capacity regulation of
reciprocating compressors.
Software version
V1.0.0 – 2023-03 Documentation status
Control module for reciprocating compressors
ASV101_V1.0.0_PI_2023-03_EN 3
Subject to technical changes
ASV101
1.4 Circuit diagram
Fig. 2: Circuit diagram
1.5 Installing the device
This device is designed for top-hat rail installation. The housing is a standard size and is also suitable
for installation in fuse boxes or distribution switch boxes.
The devices can be positioned next to one another without gaps.
Fig. 3: Dimensions
WARNING
DANGER TO LIFE FROM ELECTRIC SHOCK AND/OR FIRE!
• Switch off the power to the entire plant before installing. Otherwise, mains voltage and/or exter-
nal voltage may still be present, even if the control voltage is switched off. Always remove both
power plugs (L and N).
The entire plant must be free of voltage.
1. (A) Place the device with the leading edge at an acute angle to the top-hat rail.
2. (B) Push the device downwards onto the top-hat rail.
The device snaps into place with the fastening safety catch (a) on the top-hat rail.
You can now connect the device.
Fig. 4: Top-hat rail installation
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Control module for reciprocating compressors
4 ASV101_V1.0.0_PI_2023-03_EN
Subject to technical changes
ASV101
1.6 Function
The ASV101 is used for controlling valves for regulating the output of reciprocating compressors and can
be operated in two operation modes (EXTERNAL and PWM). The operating mode is selected using a se-
lector switch on the module (Position 0 = EXTERNAL mode / Position 1 = PWM mode). The parameters
for the desired functions are configured on the master module. Two outputs "Out1" and "Out2" are used
for capacity regulation. Capacity regulation can only take place when the two outputs have been enabled
by a feedback signal from the compressor on the "Operation feedback" input (terminal 1...2). If this feed-
back is not present, the two outputs and the valves are switched off. When enabled, outputs "Out1" and
"Out2" are actuated through the 0...10V control input (terminal 9...10). The required control signal is sent
continuously from the FRIGOLINK rack master module HVx through the 0...10V outputs of the compressor
field modules (FVB110B, FVB110-PAT, FVB120B, FVB120-PAT, FVB140B, FVB140-PAT).
PWM operating mode
In PWM mode (Pulse Width Modulation), the ASV101 converts the modulated 0…10V control signal
from a field module into a valve cycle value. In this way, each voltage value at the input corresponds
to a certain pulse/pause ratio at the output. The period duration of the pulse width modulation is 12s
and cannot be changed.
The two outputs available on the ASV101 are push-pull outputs. In this way, 2 banks of compressors
can be controlled at the same time, each with 0...100% bank capacity and therefore with 0...100% com-
pressor capacity. Push-pull operation produces an even mass flow since bank switching is distributed
over time, thus avoiding - as far as possible - simultaneous switching of the cylinder bridges. If more
than 2 banks are to be controlled, they can be operated in parallel with the first two banks. Total com-
pressor capacity is then also controlled from 0 to 100%. Parallel connection only affects the mass flow
ratios, which may differ when examined periodically. Output is inverted (0%=both outputs ON).
Fig. 5: PWM operating mode: Power regulation
EXTERNAL operating mode
In this operating mode, the outputs can be controlled separately by voltage coding.
1.7 Technical data
0.0V 3.3V 6.6V 10.0V
Out1 ON OFF ON OFF
Out2 OFF OFF ON ON
Power supply 230V~, +10% / -20%, 7VA approx.
Enable input 230V~, +10% / -20%
Analogue control input 0...10V=
Control outputs for
solenoid valves
Electronic, 230V~, each 10...40VA
Maximum continuous
load
0.315A, integrated semiconductor protection (no isolator)
Connection cross-section 2.5mm²
Dimensions (W x H x D) 53 x 90 x 58mm (DIN 43880)
Fastening Top-hat rail TH 35-15 or TH 35-7.5 (DIN EN 60715)
Ambient temperature Operation: 0...+55°C, storage: -25...+70°C
Weight About 60g
CE conformity - 2014/30/EU (EMC Directive)
- 2014/35/EU (Low Voltage Directive)
EAC conformity - TR CU 004/2011
- TR CU 020/2011
RoHS II
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