Regin RDAS-24C Series User manual

en
WE TAKE BUILDING
AUTOMATION PERSONALLY
VARIABLE LIST
RDAS…-24C

Rev. A, 2021-11-02
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Ever since Regin was established in 1947, we have developed and marketed prod cts and systems that create good
levels of indoor comfort. Today, we are an important player with one of the market's broadest ranges for b ilding
a tomation.
O r goal is to make real estates in the world more energy efficient. Regin is an international gro p and o r prod cts
sells in over 90 co ntries. Thanks to o r global presence with strong local representation, we are well aware of the
req irements of the market, as well as of how o r prod cts and systems f nction nder the most variable conditions.
Every year, Regin makes s bstantial investments in the development of o r systems and HVAC-prod cts.
DISCLAIMER
The information in this man al has been caref lly checked and is believed to be correct. Regin makes no warranties
abo t the contents of this man al and sers are req ested to report errors and discrepancies to Regin, so that
corrections may be made in f t re editions. The information in this doc ment is s bject to change witho t prior
notification.
Some prod ct names mentioned in this doc ment are sed for identification p rposes only and may be the registered
trademarks of their respective companies.
© AB Regin. All rights reserved.

Tab e of Contents
1 RDAS…-24C and Modbus communication .................................................................................5
1.1 Introd ction .......................................................................................................................5
1.2 Models witho t spring ret rn ...............................................................................................5
1.3 Models with spring ret rn....................................................................................................5
2 Comissioning notes......................................................................................................................6
2.1 General checks ...................................................................................................................6
2.1.1 Environmental conditions.......................................................................................6
2.1.2 Mechanical check (RDAS5-24C, RDAS10-24C, RDAS20-24C and RDAS35-
24C).....................................................................................................................6
2.1.3 Mechanical check (RDAS7S-24C and RDAS18S-24C) .............................................6
2.1.4 Electrical check (RDAS5-24C, RDAS10-24C and RDAS35-24C) .............................6
2.1.5 Electrical check (RDAS7S-24C, RDAS18S-24C and RDAS20-24C)..........................6
2.1.6 Rotary direction switch ..........................................................................................6
3 Modbus........................................................................................................................................8
3.1 HMI - H man machine interface (RDAS5-24C and RDAS10-24C) ........................................8
3.1.1 P sh b tton operation............................................................................................8
3.1.2 LED colors and patters...........................................................................................8
3.1.3 Reset by p sh b tton .............................................................................................9
3.2 HMI - H man machine interface (RDAS7S-24C, RDAS18S-24C, RDAS20-24C and
RDAS35-24C)....................................................................................................................9
3.2.1 P sh b tton operation............................................................................................9
3.2.2 LED colors and patters.........................................................................................10
3.2.3 Resetting the device by p sh b tton ......................................................................10
3.3 P sh b tton addressing ......................................................................................................10
3.3.1 Display c rrent address (starting with lowest address digit)......................................11
3.3.2 Set new address (starting with lowest address digit).................................................11
3.3.3 Examples ............................................................................................................11
3.4 Commissioning.................................................................................................................12
3.4.1 Workflow 1.........................................................................................................12
3.4.2 Workflow 2.........................................................................................................12
4 Variab e ist.................................................................................................................................14
4.1 Modb s registers...............................................................................................................14
4.1.1 Register 769 "Stat s"............................................................................................15
4.1.2 S pported f nction codes .....................................................................................15
4.2 Parameter and f nction description.....................................................................................15

RDAS…-24C and Modbus communication
1 RDAS…-24C and Modbus communication
1.1 Introduction
RDAS…-24C is a range of damper act ators with Modb s comm nication. The damper act ators are
intended to se in ventilation and air conditioning sites to operate air dampers and air throttles. The
act ators can be part of a complete ventilation sol tion, together with other prod cts in the Regin
ventilation family.
All available Modb s variables are presented in the variable list in 4 Variable list
1.2 Mode s without spring return
Article Supply voltage Power consumtion Running time,
rotation
Torque Max.
damper size
Sound power
level
RDAS5-24C 24 V AC (20…28 V
AC 50/60 Hz)
3VA (2.5 W) 150s/90° 5 Nm 0.8 m228 dB
RDAS10-24C 24 V AC (20…28 V
AC 50/60 Hz)
3VA (2.5 W) 150s/90° 10 Nm 1.6 m228 dB
RDAS20-24C 24 V AC/DC (20…
28 V AC 50/60 Hz /
24…48 V DC)
2.8 VA (1.7W) 150s/90° 20 Nm 4 m2<35 dB
RDAS35-24C 24 V AC (20…28 V
AC 50/60 Hz)
8 VA (8W) 125s/90° 35 Nm 6 m243 dB
1.3 Mode s with spring return
Article Supply voltage Power
consumtion
Running
time, rotation
Torque Max. damper
size
Sound
power level,
actuator
Sound power
level, spring
return
RDAS7S-24C 24 V AC/DC
(20…28 V AC
50/60 Hz / 24…
48 V DC)
AC 5VA
(3.5W) / DC
3.5W
90s/90° 7 Nm 1.5 m240 dB(A) 61 dB(A)
RDAS18S-24C 24 V AC/DC
(20…28 V AC
50/60 Hz / 24…
48 V DC)
AC 7VA (5W)
/ DC 4W
90s/90° 18 Nm 3 m246 dB(A) 71 dB(A)
RDAS…-24C variab e ist, Rev. A 5

Comissioning notes
2 Comissioning notes
All information necessary for commissioning is available in this doc ment. It is available for download from
Regin’s website, www.regincontrols.com
2.1 Genera checks
2.1.1 Environmenta conditions
Check to ens re that all permissible val es are observed.
2.1.2 Mechanica check (RDAS5-24C, RDAS10-24C, RDAS20-24C and RDAS35-
24C)
✓Check that the nit is mo nted properly and ens re that all mechanical settings correspond to the site-
specific req irements. Additionally, ens re that the dampers are sh t tight when in the f lly closed
position.
✓Fasten the act ator sec rely to avoid side load.
✓Rotary movement check: Man ally change the damper setting by pressing the gear train
disengagement b tton and t rn the adapter (only if no voltage is applied).
2.1.3 Mechanica check (RDAS7S-24C and RDAS18S-24C)
✓Check that the nit is mo nted properly and ens re that all mechanical settings correspond to the site-
specific req irements. Additionally, ens re that the dampers are sh t tight when in the f lly closed
position.
✓Fasten the act ator sec rely to avoid side load.
✓Check the rotary movement: Man ally set the damper by t rning the adapter sing an Allen key, and
lock the gear train as per the mo nting instr ctions (only if no voltage is applied).
✓Check the nlocking mechanism of the gear train by t rning the Allen key in the direction of 90°. See
instr ctions for RDAS7S-24C and RDAS18S-24C for f rther information.
2.1.4 E ectrica check (RDAS5-24C, RDAS10-24C and RDAS35-24C)
✓Check to ens re that the cables are connected in accordance with the site wiring diagram.
✓The operation voltage AC 24 V (SELV/PELV) m st be within the tolerance val es.
2.1.5 E ectrica check (RDAS7S-24C, RDAS18S-24C and RDAS20-24C)
✓Check to ens re that the cables are connected in accordance with the site wiring diagram.
✓The operation voltage AC 24 V /DC 24…48 V (SELV/PELV) m st be within the tolerance val es.
2.1.6 Rotary direction switch
The set direction of rotation m st be the same as the req ired direction of the air damper.
The factory setting is clockwise:
6 RDAS…-24C variab e ist, Rev. A

Comissioning notes
Figure 2-1 Clockwise
RDAS…-24C variab e ist, Rev. A 7

Modbus
3 Modbus
3.1 HMI - Human machine interface (RDAS5-24C and RDAS10-
24C)
AB
Figure 3-1 HMI - Human machine interface (RDAS -24C and RDAS10-24C)
A = P sh b tton, B = LED
3.1.1 Push button operation
Activity Push button operation Confirmation
Display current address (in reverse order) Press and hold the button for shorter than
1 second
Current address is displayed, see 3.3.1
Display current address (starting with
lowest address digit)
Enter Modbus address with push-button Press and hold button between 1 and 5
seconds
See description in section 3.3 Push button
addressing
Reset to factory settings Press and hold the button for longer than
10 seconds
Orange LED flashes
3.1.2 LED co ors and patters
Colour Pattern Description
Green Steady Start-up
1 second on /5 seconds off Fault free operation ("life pulse")
flashing Bus traffic
Orange /green 1 second orange / 1 second green Device is in override control
8 RDAS…-24C variab e ist, Rev. A

Modbus
Orange 1 second on / 5 seconds off Mechanical fault / Internal error
Red Steady Mechanical fault / Device jammed
1 second on / 5 seconds off Internal error
0.1 second on / 1 second off Bus-parameters not configured
3.1.3 Reset by push button
The damper act ator can be reset by p sh-b tton:
1. Press and hold the b tton for longer than 10 seconds: LED starts flashing orange
2. Release the b tton while LED still flashes: LED keeps flashing for 3 seconds
3. If the b tton is pressed within these 3 seconds, the reset is cancelled
4. After these 3 seconds: LED shines red (reset), then green (start- p)
See section 3.3 Push button addressing for more information and examples.
3.2 HMI - Human machine interface (RDAS7S-24C, RDAS18S-
24C, RDAS20-24C and RDAS35-24C)
AB
Figure 3-2 HMI - Human machine interface (RDAS7S-24C, RDAS18S-24C, RDAS20-24C and RDAS3 -24C)
A = P sh b tton; B = LED
3.2.1 Push button operation
Activity Push button operation Confirmation
Display current address (starting with
lowest address digit)
Press and hold the button for shorter than
1 second
1-digit: red
10-digits: green
100-digitis: orange
If termination is switched on, LED flashes
blue 1 time after address display.
Example:
124 = 4x red, 2x green, 1x orange
RDAS…-24C variab e ist, Rev. A 9

Modbus
Turn bus termination on / off: turn on 1. press the button 3 times LED flashing and flickering stops (termina-
tion mode)
2. press the button 1 time shortly LED flashes blue 1 time
3. press the button until LED shines red LED shines red (confirmation)
4. release the button LED off
Address display
LED flashes blue 1 time after address
display
Normal operation
Turn bus termination on / off: turn off 1. press the button 3 times LED flashing and flickering stops (termina-
tion mode)
2. press the button until LED shines red LED shines red (confirmation)
3. release the button Normal operation
Enter Modbus address with push-button Press and hold button between 1 and 5
seconds
See description in section 3.3 Push button
addressing
Reset to factory settings Press and hold the button for longer than
10 seconds
Orange LED flashes
3.2.2 LED co ors and patters
Colour Pattern Description
Green 1 second on / 5 seconds off Normal operation ("life pulse") without bus
traffic
flashing Normal operation ("life pulse") with bus
traffic
Orange /green 1 second orange / 1 second green Device is in override control
Orange 1 second on / 1 second off Bus parameters not yet configures
1 second on / 5 seconds off Backup mode entered
Red Steady Mechanical fault, device jammed or
manual override
1 second on / 5 seconds off Internal error
0.1 second on / 1 second off Invalid configuration, e.g. Min = Max
Blue Flashes 1 time after address display Bus termination is set active
3.2.3 Resetting the device by push button
1. Press and hold the b tton for longer than 10 seconds: LED starts flashing orange.
2. Release the b tton while LED still flashes: LED keeps flashing for 3 seconds.
3. If the b tton is pressed within these 3 seconds, the reset is cancelled.
4. After those 3 seconds: LED shines red (reset), then the device restarts.
See section 3.3 Push button addressing for more information and examples.
3.3 Push button addressing
The Modb s address can be set witho t a separate tool by sing p sh-b tton and LED. To display the
c rrent address, press b tton < 1 second.
10 RDAS…-24C variab e ist, Rev. A

Modbus
3.3.1 Disp ay current address (starting with owest address digit)
Colours Digits
Red 1-digits
Green 10-digits
Orange 100-digits
Example for address 124:
LED
42 1
NNoottee!! The address is entered and shown starting with owest address digit, see figure above (124 in
the examp e is starting with 4x red)
3.3.2 Set new address (starting with owest address digit)
1. Enter addressing mode: press and hold the b tton for longer than 1 second ntil LED shines red, then
release b tton (before LED gets dark).
2. Enter digits: press the b tton n-times ->LED flashes per b tton press (feedback).
Colo rs: 1-digits: red / 10-digits: green / 100-digits: orange
3. Store digits: press and hold b tton ntil LED shines in colo r of next digits -> release b tton.
4. Save address: press and hold b tton ntil LED shines red (confirmation) -> release b tton.
An address can be stored at any time, i.e. after setting the 1-digits, or after setting the 1- and the 10-
digits.
5. Entered address is repeated one times for confirmation.
NNoottee!! If button is re eased before LED shines red, the address is discarded.
3.3.3 Examp es
Set address "124":
1. Enter addressing mode: press and hold the b tton for longer than 1 second ntil LED shines red, then
release b tton (before LED gets dark).
2. Set 1-digits: Press b tton 4-times -> LED flashes red per b tton press
3. Store 1-digits: Press and hold the b tton ntil LED shines green - release b tton
4. Set 10-digits: Press b tton 2-times -> LED flashes green per b tton press
5. Store 10-digits: Press b tton ntil LED shines orange - release b tton
6. Set 100-digits: Press b tton 1-times -> LED flashes orange per b tton press
7. Store address: Press b tton ntil LED shines red - release b tton
-> address is stored and displayed 1 time for confirmation
RDAS…-24C variab e ist, Rev. A 11

Modbus
Figure 3-3 Example address 124
Set address "50"
1. Enter addressing mode: and hold the b tton for longer than 1 second ntil LED shines red, then release
b tton (before LED gets dark).
2. Skip 1-digits: Hold b tton pressed ntil LED shines green - release b tton
3. Set 10-digits: Press b tton 5-times -> LED flashes green per b tton press
4. Store address (skip 100-digits): hold b tton pressed ntil LED shines red - release b tton
-> address is stored and displayed 1 time for confirmation
Figure 3-4 Example address 0
Set address "5"
1. Enter addressing mode: and hold the b tton for longer than 1 second ntil LED shines red, then release
b tton (before LED gets dark).
2. Set 1-digit: Press b tton 5-times -> LED flashes red per b tton press
3. Store address (skip 10-digit and 100 digit): Press b tton ntil LED shines red -> address is stored and
displayed 1 time for confirmation
Figure 3- Example address
3.4 Commissioning
3.4.1 Workf ow 1
D ring commissioning check/set the following:
✓B s config ration (address, ba drate, transmission mode, and optionally termination). The defa lt
address 255 allows to mo nt and power m ltiple act ators at the same time witho t interfering with
each other.
✓Damper act ator parameters (opening directions, position limits, positions adaptation etc.) can be
checked via the Modb s register.
3.4.2 Workf ow 2
The devices can be config red over b s if the pre-commissioning settings allow for a connection between the
Modb s master / programming tool and peripheral devices (i.e. non-conflicting addresses and matching
ba drate / transmission format).
12 RDAS…-24C variab e ist, Rev. A

Modbus
✓F ll config ration over b s. If the address is niq e per segment when powered p, the device can be
accessed by the Modb s master (or programming tool) and the address and other parameters can then
be set to the definitive val es.
✓Partial config ration over b s: If the address is not niq e per segment when powered p, each device
m st get a non-conflicting address before connecting it to the b s, either by sing the address inp t
with p sh-b tton (see 3.3 Push button addressing) or by setting the address to 246 with p sh b tton
press and hold between 5 and 10 seconds. After addressing all devices, the remaining config ration can
be done over the b s sing the defa lt settings for ba derate (a to-ba d) and transmission mode for
the Modb s master.
✓Overwriting the b s config ration over b s ses a timeo t. If "1 = Load" is not written into Reg 768
within 30 seconds, all val es are discarded.
Example: Table shows b s config ration registers before and after changing them over b s.
Reg. Name Pre-commissioning New value (example)
764 Modbus Address 246 12
765 Baudrate 0 = auto 1 = 9600
766 Transmission Format 0 = 1-8-E-1 3 = 1-8-N-2
767 Termination 0 = Off 0 = Off
768 Bus Conf. Command 0 = Ready 1 = Load
RDAS…-24C variab e ist, Rev. A 13

Variab e ist
4 Variab e ist
4.1 Modbus registers
Reg. Name R/W Unit Scaling Range / enumeration
Process Values
1 Setpoint RW % 0.01 0…100
2 Override control RW - - 0 = Off / 1= Open / 2 = Close
3 = Stop / 4 = GoToMin / 5 = GoToMax
3 Actual position R % 0.01 0…100
256 Command RW -0 = Ready / 1= Adaption / 2 = Selftest
3 = ReInitDevice/ 4 = RemoteFactory
Reset
Parameters
257 Opening direction RW - - 0 = CW /1 = CCW
258 Adaptive Mode RW - - 0 = Off / 1 = On
259 Operating Mode RW - - 1 = POS
260 MinPosition RW % 0.01 0…100
261 MaxPosition RW % 0.01 0…100
262 Actuator Running
Time
Rs1 150
513 Backup Mode RW - - 0 = Go to BackupPosition
1 = Keep last position
2 = Disabled
514 Backup Position RW % 0.01 0…100
515 Backup Timeout RW s1 0…65535
516 Startup Setpoint RW % 0.01 0…100
764 Modbus Address RW - - 1…247 / 255 = "unassigned"
765 Baudrate RW - - 0 = auto / 1 = 9600 / 2 = 19200
3= 38400 / 4 = 57600 / 5 = 76800
6= 115200
766 Transmission Format RW - - 0 = 1-8-E-1 / 1 = 1-8-O-1
2 = 1-8-N-1 / 3 = 1-8-N-2
767 Bus Termination RW - - 0 = Off / 1 = On
768 Bus Conf. Command RW - - 0 = Ready / 1 = Load / 2 = Discard
769 Status R - - See below, Register 769 "Status"
Reg. Name R/W Value Example
Device information
1281 Factory Index R Two bytes, each
coding an ASCII
char.
1282 Factory Date HWord R Two bytes, the
lower coding the
Year (hex)
1283 Factory Date LWord R High byte: coding
the month (hex)
Low byte: coding
the day (hex)
1284 Factory SeqNo HWord R Hword + Lword =
HEX-representa-
tion of Sequence
number:
Read 1284 -> 000A
Read 1285 -> A206
AA206(hex) -> 696838 (dec) -> Device has
sequence number 696838
1285 Factory SeqNo LWord R
14 RDAS…-24C variab e ist, Rev. A

Variab e ist
1409 ASN [Char_16…15] R Each register: Two
bytes, each coding
an ASCII char.
ASN is coded
beginning with reg.
1409
Example:
0x47 44 = GD
0x42 31 = B1
0x38 31 = 81
0x2E 31 = .1
0x45 2F = E/
0x4D 4F = MO
-> ASN is GDB181.1E/MO
1410 ASN [Char_14…13] R
1411 ASN [Char_12…11] R
1412 ASN [Char_10…9] R
1413 ASN [Char_8…7] R
1414 ASN [Char_6…5] R
1415 ASN [Char_4…3] R
1416 ASN [Char_2…1] R Reserve
4.1.1 Register 769 "Status"
Status
Bit 00 1 = reserved Bit 06 1 = Adaption done
Bit 01 1 = Backup mode active Bit 07 1 = Adaption in progress
Bit 02 1 = reserved Bit 08 1 = Adaption error
Bit 03 1 = reserved Bit 09 1 = Selftest failed
Bit 04 1 = Mechanical fault, device jammed or
manual override
Bit 10 1 = Selftest passed
Bit 05 1 = Nom. lifetime exceeded Bit 11 1 = Invalid configuration
4.1.2 Supported function codes
Function codes
03 (0x03) Read Holding Registers
04 (0x04) Read Input Register
06 (0x06) Write Single Register
16 (0x16) Write Multiple Registers (Limitation: Max. 120 registers within one message
4.2 Parameter and function description
Function Reg. Description
Override
control
2 The actuator can be operated in override control for commissioning / maintenance purposes or system-wide
functions (e.g. night-cooling).
✓Manual override: When the gear disengagement is used to freely adjust the damper position, a mechan-
ical jam will be detected if a mismatch between setpoint and actual position persists for more than 10
seconds.
✓Remote override: The actuator enters this state when an override command is sent over the bus
✓Available commands:
- Open /Close (depends on opening direction)
- Min / Max (depends on Min/Max settings)
- Stop
Adaptive
positioning
258 ✓For air dampers where the opening range is smaller than the nominal opening range 0…90°, the feedback
signal can be adapted to have the actual opening range represented as 0…100%.
✓Using adaptive positioning makes the actuator driving to its end positions at the first startup after acti-
vating the adaptive positioning.
✓To trigger the adaptation again after the first startup, either the command "CalibrateAdaption" (Write "1"
into register no. 256), or the adaptive positioning can be turned off and on again.
RDAS…-24C variab e ist, Rev. A 15

Variab e ist
Backup mode 513,
514,
515
✓In case the communication to the controller is lost, the device can be configured to go into a defined state.
✓Default setting mode is "keep last setpoint", i.e. in case of communication loss, the device controls to the
last received setpoint.
✓If the backup mode is enabled, it can be configured as follows:
- go to a predefined backup position
- keep current position
Restarting
the device
256 Restarting is possible by:
✓Power-reset (turning operating voltage off and on) or
✓by "ReInitDevice" command.
-> Device re-initializes and sets all process values to defaults.
Reset The actuator supports the following re-initialization / reset behaviour:
✓Local reset by push-button
✓Remote reset: Using "RemoteFactoryReset" command
Effect of reset:
Process values: set to default values.
✓Parameters:
- Application and actuator parameters are set to factory defaults.
- Network parameters are reset only in case of local reset, not by remote reset (otherwise there will be
loss of communication).
✓Following parameters are not reset: Counters, status flags, device info, and factory data.
Self test 256 When triggered, the self test drives the actuator to the detected limits and sets the flags in register 769
according to the result (bit 09 = 1 -> "failed" or bit 10 = 1 -> "passed").
The self test is not passed when the limits were not reached from the lower end (results in jam). If the Min/
Max limits can be exceeded, the self test is not evaluated as failed.
16 RDAS…-24C variab e ist, Rev. A

RDAS…-24C variab e ist, Rev. A 17

VL40007 Rev. A, 2021-11-02. © AB Regin. A rights reserved.
HEAD OFFICE AB Regin, Box 116, SE-428 22 Kå ered • Visiting address: Bangårdsvägen 35, SE-428 36 Kå ered
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