Danfoss ACCSCS Data sheet
Data Sheet
Fan speed controller
Accessory
Type ACCSCS
Electronic controller suitable for fan speed control
ACCSCS are designed to regulate the speed of fans and pumps proportionally and continuously. They function as a simple voltage regulator whose command signal (0..10 V or 4..20 mA or PWM) comes from an external regulating device.
It’s possible to connect more than one motor in parallel provided that the maximum input regulating current is less than the controller nominal current.
Features:
Three phase model
• Power 400 V
• Input voltage three phase 400 V AC -15 +10%, 50/60 Hz
• Output voltage 30 – 99% of supply line
• Command signal 0 – 10 V, 4 – 20 mA and PWM 5 / 10 V
• Aux output supply 10 V aux power (Imax = 50 mA) for external potentiometer
• Output relay that commute in case of phase loss or overtemperature
AI205486421156en-000702
Fan speed controller, Accessory
Product speci€cation
General features
Table 1: General features
Features |
Description |
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Power supply |
400 V AC |
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Test |
According to EN60730 this device provides a type 1 action, it is an incorporated controller suitable for assembly on a ƒat |
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surface and for use in conditions of normal pollution. |
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Storage conditions |
-20 – 70 °C |
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Index of protection |
Plastic covering which is self-extinguishing: IP55 |
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EMC (Electro-Magnetic Compatibility |
The controller has a built-in suppression filter to meet all required CE directives. Danfoss controls are designed to be instal- |
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led inside a machine or a standard electrical cabinet and is therefore considered a component. It is the installer’s responsi- |
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bility to observe the criteria of compatibility to guarantee compliance with the directives. |
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Wiring |
• All wiring should conform to local regulations and must be made by authorized personnel only. |
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All connections wires must ensure efficient insulation also at temperatures exceeding 80 °C. |
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Attach the controller to a non-painted plate with anti-corrosive treatment. If the length of the motor cable exceeds 5 m, |
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use shielded cable. To avoid dispersion currents, both ends of the motor cable shield, the motor earth, and the |
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controller earth must be connected to the same earth pole. |
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If the control cable length exceeds 2 m, use shielded cable, connecting the shield only at the end of the controller. |
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• Ensure that the control 0 V is not connected to earth. If the power, motor and control cables exceed 10 m, make sure |
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they are separated by at least 0.3 m to avoid creating a coupling effect. |
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To protect the power line and the regulator, the installation technician must install extra-rapid fuses upstream of the |
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power supply. If a differential circuit breaker is installed, it must be of the delayed action type. |
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Technical data
Table 2: Three phase
Features |
Description |
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Product No. |
080G0217 |
080G0218 |
080G0219 |
080G0220 |
Power - 400 V AC |
5.5 K V A |
8 K V A |
13 K V A |
19 K V A |
Current nom (Arms) |
8 A |
12 A |
20 A |
28 A |
Input voltage |
Three phase 400 V AC -15 +10%, 50/60 Hz |
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Output voltage |
30 – 99% of supply line |
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Command signal |
Signal 0 – 10 V, 4 – 20 mA, PWM 5/10 V and Modbus |
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Analog output |
10 V (max load 50 mA) |
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Digital output |
Emergency relay 1 A-250 V AC / 3 A-30 V DC |
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Protections |
Class II at the input terminal block (4 K V) |
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Class I as regards the accessible parts |
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Phase lost, overheating (the regulator restores automatical) |
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Operating temperature |
-10 – 50 °C (-20 °C when the power is maintained) |
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Max heat sink tempearture |
75 °C |
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Storage temperature |
-20 – 80 °C |
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Protection degree |
Self-extinguishing plastic covering IP55 |
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Dimensions (mm) - LxHxP |
230 x 165 x 150 |
230 x 265 x 165 |
230 x 265 x 230 |
340 x 270 x 235 |
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Modbus address
Example: Request by the MASTER to read the variable “output voltage” identified with address 0x0B: 01 03 00 0B 00 01.
Request by the MASTER to write on the variable “Modbus input command” identified with address 0x401: 01 06 04 01 00 01.
CAUTION:
The regulation command via Modbus requires rewriting in its address within the time out (default 30 seconds) even if the value remains unchanged.
Over the time out, in absence of any other command signal, the regulator switch OFF the power outputs.
© Danfoss | Climate Solutions | 2021.03 |
AI205486421156en-000702 | 2 |
Fan speed controller, Accessory
Table 3: Modbus address
HEX |
Variable |
Unit |
Reading/ |
Min. value |
Max. value |
Description |
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address |
Writing |
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0x00B |
Voltage output |
% |
L |
– |
– |
Indicates the output percentage voltage / speed |
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0=no error |
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1=phase lost |
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0x00D |
Alarm |
Num |
L |
– |
– |
3=over temperature |
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5=incorrect settings |
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6=timeout MDB |
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0x400 |
Stop regulation |
Num |
L/S |
0 |
1 |
Write the value 1 to enable writing and disable the |
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running place to 0 to re-enable the running |
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0x421 |
Regulator address |
Num |
L/S(1) |
1 |
247 |
Indicates the modbus address (slave) - default 0x01 |
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(=1 if 9600bps) |
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0x422 |
Baudrate |
Num |
L/S(1) |
1 |
3 |
(=2 if 19200) |
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(=3 if 38400) - default =2 |
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0x423 |
Stop Bit |
Num |
L/S(1) |
1 |
2 |
(=1 if 1 stop bit) |
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(=2 if 2 stop bit) - default=1 |
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(=1 if no parity) |
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0x424 |
Parity |
Num |
L/S(1) |
1 |
3 |
(=2 if even parity) |
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(=3 if odd parity) - default =1 |
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0x425 |
Timeout |
Sec |
L/S(2) |
1 |
240 |
Indicates the time within which the master must re- |
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new his command regulation |
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0x401 |
Command by Modbus |
% |
L/S(2) |
0 |
100 |
Variable for command the regulation (0-100) by |
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Modbus |
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0x402 |
Min. input |
% |
L/S(2) |
10 |
Max input |
Voltage signal command / speed V1 |
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0x403 |
Max input |
% |
L/S(2) |
Min. input |
100 |
Voltage signal command / speed V2 |
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0x404 |
Min. V1 voltage |
% |
L/S(2) |
Lim. min. motor |
Max. V2 Voltage |
Voltage / speed of IN.MIN. command signal point |
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0x405 |
Max. V2 voltage |
% |
L/S(2) |
Min. V1 voltage |
Lim. max. motor |
Voltage / speed of IN.MAX. command signal point |
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(=2 to reset and load the controller’s default values) |
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0x407 |
Reset |
Num |
L/S(2) |
1 |
3 |
(=3 to restart the regulator after changing the |
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parameter / s when is required the reboot) |
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0x40A |
Lim. Speed V1 |
% |
L/S(2) |
Lim. min. motor |
V2 limit |
Voltage that replaces V1, when V1 LIMIT>V1 |
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0x411 |
Kick start |
Num |
L/S(2) |
0 |
1 |
(=0 kick start enable) |
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(=1 kick start able) |
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0x41E |
Regulation profile |
Num |
L/S(2) |
1 |
2 |
(=1 linear profile) |
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(=2 axial fans profile) |
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(1)Necessary reebot after writing the changes.
(2)Writing possible only if the parameter “Adjustment Lock” is set to 1.
Figure 1: Voltage graph 1 |
Figure 2: Voltage graph 2 |
VOUT % |
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V2 |
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<![if ! IE]> <![endif]>DANFOSS |
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V1 |
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1 |
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LIMIT V1 |
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COMMAND |
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IN.MIN |
IN.MAX |
100% |
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VOUT % |
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<![if ! IE]> <![endif]>80G8092B |
V2 |
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<![if ! IE]> <![endif]>DANFOSS |
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LIMIT V1 |
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V1 |
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2 |
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COMMAND |
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IN.MIN |
IN.MAX |
100% |
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© Danfoss | Climate Solutions | 2021.03 |
AI205486421156en-000702 | 3 |
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