Theben RM 4 H FIX1 User manual

2018-07-30
KNX manual
High-performance switch actuators
RM 4 H FIX1
RM 8 H FIX2
4940212
4940217

KNX product manual RM 4 H, RM 8 H
Contents
1Function description 3
2Operation 4
3Technical data 5
4The FIX2 RM 8 H application programme 7
4.1 Selection in the product database 7
4.2 Overview of communication objects 8
4.3 Description of communication objects 10
4.4 Parameter pages overview 15
4.5 General parameters 16
5Typical applications 34
5.1 2x switching with push button interface 34
5.2 Temperature-controlled domestic water heating 36
6Appendix 38
6.1 The scenes 38
6.2 Conversion of percentages to hexadecimal and decimal values 41

Switch actuators RM 4 H, RM 8 H
1Function description
•4-fold FIX1 or 8-fold FIX2 switch actuator.
•Up to 25 A switching current.
•Connection cross-section up to a maximum of 6 mm2.
•Energy-saving thanks to bistable relay.
•No power connection required.
•LED switching status indicator for each channel.
•Manual operation on device.
•Adjustable features: e.g. switching, delayed switching, pulse function.
•Links, type of contact (NC contact/NO contact) and participation in central commands
such as permanent On, permanent Off, Central switching and save/call up scene.
•Switch functions: e.g. On/Off, pulse, On/Off delay, staircase light with forewarning.
•Logical links: e.g. block, AND, release, OR.
•Activation of the channel function via 1-bit telegram or 8-bit threshold.

Switch actuators RM 4 H, RM 8 H
2Operation
Each channel can be switched on and off independently of all parameters using the buttons on
the device. A status LED displays the current switching status.
All bus telegrams are ignored with manual operation switched on (manual button) and the
channels are to be operated exclusively via the buttons.
Once the bus voltage has been connected or after a bus reset, it might take a few seconds until the
relays switch.

Switch actuators RM 4 H, RM 8 H
3Technical data
KNX bus voltage
21 – 32 V DC
KNX bus power input
Typical: 6.5 mA1, 10 mA2
Maximum: 12.5 mA
3
, 17.5 mA
4
Number of channels
4 or 8
Type of installation
DIN-rail
Width
4 TE
5
or 8 TE
6
Connection type
KNX bus terminal, screw terminals
Max. cable cross-section
Solid: 6 mm² | strand with crimp terminal:
up to 4 mm²
Standby output
min. 0.17 W/0.26 W
Type of contact
μ-contact, floating NO contact, contact gap
< 3 mm; NO contact;
the switching of any phase is permitted
Switching capacity
25 A (at 240 V AC, cos
ϕ
= 1)
16 A (at 250 V AC, cos
ϕ
= 0.6)
Minimum load
12 V/100 mA
Switching SELV
Possible if all channels of a module
connect protective low voltage (SELV)
Protection rating
IP 20
Protection class
II subject to designated installation
Operating temperature
–5 °C … +45 °C
Incandescent/halogen lamp load
4800 W
7
1RM 4 H
2RM 8 H
3RM 4 H
4RM 8 H
5RM 4 H
6RM 8 H
7With 30,000 switching cycles

Switch actuators RM 4 H, RM 8 H
Fluorescent lamps (LLB) uncompensated/series
compensated 5000 VA1
Fluorescent lamps (LLB) parallel compensated
2500 W, 200 μF
2
Fluorescent lamps (EVB)
1650 W
Compact fluorescent lamps (EVG)
410 W
LED lamps < 2 W
75 W
LED lamps 2 W – 8 W
850 W
Pollution degree
2
Rated impulse voltage
4 kV
Shortest switching interval, if all channels are
switched at the same time 3 s
1With 30,000 switching cycles
2With 30,000 switching cycles

Switch actuators RM 4 H, RM 8 H
4The FIX2 RM 8 H application programme
4.1 Selection in the product database
Manufacturer
Theben AG
Product family
Output
Product type
RM 4 H, RM 8 H
Programme name
FIX2 RM 8 H
The ETS database can be found on our website: www.theben.de/en/downloads_en
Number of communication objects
83
Number of group addresses
254
Number of associations
255

Switch actuators RM 4 H, RM 8 H
4.2 Overview of communication objects
4.2.1 Channel-related objects
No. Object name Function Length R W C T DPT
0 Channel C1
Switch object 1 bit R W C - 1.001
Threshold as a percentage 1 byte R W C - 5.001
Threshold 0..255 1 byte R W C - 5.010
Threshold 0..65535 2 bytes R W C - 7.001
Threshold EIS 5 (DPT 9.xxx) 2 bytes R W C - 9.xxx
1 Channel C1
Logic input in OR gate 1 bit R W C - 1.002
Logic input in AND gate 1 bit R W C - 1.002
Logic input in XOR gate 1 bit R W C - 1.002
2 Channel C1 Block 1 bit R W C - 1.001
3 Channel C1 Call up/save scenes 1 byte R W C T 18.001
4 Channel C1 Block scenes = 1 1 bit R W C - 1.001
Enable scenes = 1 1 bit R W C - 1.003
5 Channel C1 Feedback On/Off 1 bit R - C T 1.001
6 Channel C1 Operating hours feedback 4 bytes R W C T 13.100
Time to next service 4 bytes R W C T 13.100
7 Channel C1 Service required 1 bit R - C T 1.001
8 Channel C1
Reset operating hours 1 bit R W C - 1.001
Reset service 1 bit R W C - 1.001
Switching with priority 2 bit R W C - 2.001
20
–
159
Channel C2 – C8

Switch actuators RM 4 H, RM 8 H
4.2.2 Common objects
No. Object name Function Length R W C T DPT
78 C1 – C4 Manual 1 bit R W C T 1.001
79 C1 – C4 Collective feedback 4 bytes R - C T 27.001
158 C5 – C8 Manual 1 bit R W C T 1.001
159 C5 – C8 Collective feedback 4 bytes R - C T 27.001
240 Central permanent ON 1 bit R W C T 1.001
241 Central permanent OFF 1 bit R W C T 1.001
242 Central switching ON/OFF 1 bit R W C T 1.001
243 Central scenes Call up/save 1 byte R W C T 18.001
250 Version of bus coupling unit Send 14 bytes R - C T 16.001
251 Version C1 – C4 Send 14 bytes R - C T 16.001
252 Version C5 – C8 Send 14 bytes R - C T 16.001

Switch actuators RM 4 H, RM 8 H
4.3 Description of communication objects
4.3.1 Channel-related objects
Object 0 Switch object, threshold as a percentage, threshold 0..255,
threshold EIS 5 (DPT 9.xxx), threshold 0..65535
Input object: this object activates the set channel function (see parameter: Channel function).
The set channel function can either be activated via 1-bit telegram or by exceeding a threshold
(8- or 16-bit telegram).
Parameter
Activation of channel
function via
Activation of function
via
Type of threshold object
Switch object
1-bit telegram
Exceeding the
threshold
Object type: Per cent (DPT 5.001)
Exceeding per cent value
Object type: Counter value 0..255 (DPT
5.010)
Any value in given numerical
range
Object type: Counter value 0..65535
(DPT 7.001)
Object type: EIS5 e.g. CO2, brightness
(DPT 9.xxx)
2-byte floating-point
number
Object 1: Logic input in AND gate, in OR gate, in XOR gate
Only available if link is activated (Configuration options parameter page).
Forms a logical link together with the input object to activate the channel function.
Object 2: Block
Blocks the channel function.
Responses to setting and cancelling the block can be configured if the block function has been
activated (Configuration options parameter page).
Object 3: Call up/save scene
Only available if the scene function has been activated (Configuration options parameter page).
This object can be used to save and subsequently call up scenes.
Saving stores the channel status.
It does not matter how this status is produced (whether via switch commands, central objects or
the buttons on the device).
The saved status is restored when it is called up.
All scene numbers from 1 to 64 are supported.
Each channel can participate in up to 8 scenes.
See appendix: Scenes

Switch actuators RM 4 H, RM 8 H
Object 4: Block scenes = 1, enable scenes = 1
Blocks the scene function with a 1 or a 0 depending on the configuration.
As long as it is blocked, scenes cannot be saved or called up.
Object 5: On/Off feedback
Reports the current channel status.
The status can also be inverted depending on configuration.
Object 6: Time to next service, operating hours feedback
Only available if the hour counter function is activated
(Configuration options parameter page).
Reports, depending on selected Type of hour counter (Hour counter and service parameter
page), either the remaining period to the next service or the current status of the hour counter.
Object 7: Service required
Only available if the hour counter function has been activated (Configuration options parameter
page) and Type of hour counter = Counter for time to next service.
Reports if the next service is due.
0 = not due
1 = service is due.
Object 8: Switching with priority, reset service, reset operating hours
The function of the object depends on whether or not the hour counter function has been
activated (Configuration options parameter page).
Activate hour counter
Function
Usage
yes
Reset service1
Reset service interval counter.
Reset operating hours
2
Reset hour counter
no
Switching with priority
Priority control:
Status of object
Switching with
priority
Channel status
0 As specified by
the input object
of the channel
1
2
OFF
3
ON
1Depending on configuration
2Depending on configuration

Switch actuators RM 4 H, RM 8 H
4.3.2 Common objects
Objects 78, 158: Manual
Puts the corresponding channel block (C1 – C4 or C5 – C8) in manual mode or sends the status
of the manual operation.
Telegram
Meaning
Explanation
0
Auto
All channels can be operated via the bus as well as via the buttons.
1 Manual
The channels can only be operated via the buttons on the device. Bus
telegrams will not work.
Objects 79, 159: Collective feedback
Sends the current switching status of all channels in the format DPT 27.001
(DPT_CombinedInfoOnOff).
Object 240: Central permanent ON
Central switch-on function.
Enables simultaneous switching on of all channels with one single telegram.
0 = no function
1 = permanent ON
Participation in this object can be set individually for each channel
(Configuration options parameter page).
This object takes top priority.
As long as it is set, the other switch commands will not work on the participating
channels.
Object 241: Central permanent OFF
Central switch-off function.
Enables simultaneous switching off of all channels with one single telegram.
0 = no function
1 = permanent OFF
Participation in this object can be set individually for each channel
(Configuration options parameter page).
This object has the second highest priority after Central permanent ON. As long as it is
set, the other switch commands will not work on the participating channels.

Switch actuators RM 4 H, RM 8 H
Object 242: Central switching
Central switch function.
Enables simultaneous switching on or off of all channels with one single telegram.
0 = OFF
1 = ON
Participation in this object can be set individually for each channel
(Configuration options parameter page).
With this object, every participating channel responds exactly as if its input object
were receiving a switch command.
Object 243: Call up/save central scenes
Central object for using scenes.
This object can be used to save and subsequently call up “scenes”.
See appendix: Scenes
Object 250: Version of bus coupling unit
For diagnostic purposes only.
Sends the bus coupling unit software version after reset or download.
Can also be read out directly via the ETS.
Format: Axx Hyy Vzzz
Code
Meaning
xx
00 .. FF = Version of application without dividing point (10 = V1.0, 11 = V1.1, etc.).
yy
Hardware version 00..99
zzz
Firmware version 000..999
EXAMPLE: A10 H01 V001
- ETS application version 1.8
Hardware version $01
- Firmware version $001

Switch actuators RM 4 H, RM 8 H
Object 251: Version C1 – C4
For diagnostic purposes only.
Sends the software version (firmware) of the channel block C1 – C4 after reset or download.
Can also be read out directly via the ETS.
The version is issued as an ASCII character string.
Format: Mxx Hyy Vzzz
Code
Meaning
xx
19 = Module code RM 4 H / RM 8 H (hexadecimal).
yy
Hardware version 00..99
zzz
Firmware version 000..999
EXAMPLE: M19 H01 V001
- Module $19 = RM 4 H / RM 8 H
- Hardware version V01
- Firmware version V01
Object 252: Version C5 – C8
For diagnostic purposes only.
Sends the software version (firmware) of the channel block C5 – C8 after reset or download.
Can also be read out directly via the ETS.
The version is issued as an ASCII character string.
Format: Mxx Hyy Vzzz
Code
Meaning
xx
19 = Module code RM 4 H / RM 8 H (hexadecimal).
yy
Hardware version 00..99
zzz
Firmware version 000..999
EXAMPLE: M19 H01 V001
- Module $19 = RM 4 H / RM 8 H
- Hardware version V01
- Firmware version V01

Switch actuators RM 4 H, RM 8 H
4.4 Parameter pages overview
Parameter page
Description
General
General parameters: Collective feedback and relay switch delay.
Channel C1
Configuration options
Characteristics of channel and activation of additional functions
(scenes, links, etc.).
Contact
characteristics
Type of contact and status after download, bus failure, etc.
Threshold
Settings for triggering channel function through exceeding threshold.
Block function
Type of block telegram and response to blocking.
Scenes
Selection of scene numbers relevant to the channel.
Feedback
Status of feedback object, etc.
Hour counter and
service
Type of hour counter and, if required, service interval, etc.
Link
Selection of logical link.

Switch actuators RM 4 H, RM 8 H
4.5 General parameters
4.5.1 General
Designation
Values
Description
Device type
RM 4 H
4-channel device FIX1
RM 8 H
8-channel device FIX2
Function of the
manual button
applies for 24 hours or
until reset via object
blocked
applies until reset via
object
applies for 30 minutes
or until reset via object
applies for 1 hour or
until reset via object
applies for 2 hours or
until reset via object
applies for 4 hours or
until reset via object
applies for 8 hours or
until reset via object
applies for 12 hours or
until reset via object
Determines how long the device works manually and
how this is ended.
In manual mode, the channels can only be switched
on and off via the buttons on the device.
See also: Object_78
Manual operation
of the channels
enabled
The channels can be operated via the buttons on the
device.
blocked
No manual operation, the buttons on the device are
blocked.
Sending collective
feedback
no
No collective feedback, object is unavailable.
report as inactive
Object value can be requested.
only at change
Sends whenever a channel status changes.
cyclically and at change
Sends cyclically and with status changes
See appendix: Collective feedback
Relay switch
delay
This parameter sets the minimum delay between
switching on 2 relays if several are activated at the
same time.
The shortest delay is achieved by using the Central
switching object.
When switching on via individual telegrams (1
telegram per channel), the bus running times and the
sequential processing of commands cause an
additional delay.
This can help avoid high current peaks when devices
are switched on simultaneously (e.g. with a number of
lighting strips).

Switch actuators RM 4 H, RM 8 H
Designation
Values
Description
None
There is no added delay.
60 ms
100 ms
200 ms
When a relay switches on, the next one can only
switch on after the set delay is completed.
The switch-
on delay between the first and last relay is
calculated according to the following formula:
(Number of channels – 1) x delay
Example:
RM 4 H and 60 ms:
= (4 channels – 1) * 60 ms = 180 ms

Channel C4 switches 180 ms after C1.

Switch actuators RM 4 H, RM 8 H
4.5.2 Channel C1: Configuration options
A configurable copying function is not incorporated into the design.
The ETS offers convenient and extensive copying functions via the CTRL key.
Designation
Values
Description
Channel function
Switching On/Off..
On/off delay..
Pulse function..
Staircase light time switch
with forewarning function..
Flashing..
Determines the basic
functionality of the
channel.
Activation of function via
Switch object
The channel is
operated via a 1-bit
object.
Exceeding the threshold
The channel is
operated through
exceeding a 1 or 2-
byte threshold.
See below: the
“Threshold” parameter
page
Adjust block function
Yes..
The block function can
be individually
adjusted.
The relevant
parameter page is
shown.
no
The block function
works with the
standard parameters:
- Block with ON
telegram
- When setting the
block: Unchanged
- When cancelling:
Update.
Activate scenes
Yes..
no
Should scenes be
used?
Participation in central objects
no
Central objects are not
taken into account.

Switch actuators RM 4 H, RM 8 H
Designation
Values
Description
at Central switching,
Permanent On, Permanent
OFF
only in central permanent
ON
only in central permanent
OFF
only in Central switching
only in Central switching
and permanent ON
only in Central switching
and permanent OFF
only in central permanent
On and permanent OFF
Which central objects
are to be taken into
account?
Central objects enable
simultaneous
switching on and off
of several channels
with one single object.
Adjust feedback
Yes..
The feedback function
can be individually
adjusted.
The relevant
parameter page is
shown.
no
The Feedback function
works with the
standard parameters:
- not inverted
- do not transmit
cyclically
Activate hour counter
Yes..
no
Is the hour
counter/service
interval function to be
used?
Activate link
Yes..
no
Are logical links to be
used with the channel
object?

Switch actuators RM 4 H, RM 8 H
4.5.3 Contact characteristics
Designation
Values
Description
Type of contact
NO contact
Standard:
The relay contact is closed when a switch-
on command is issued.
NC contact
Inverted:
The relay contact is opened when a switch-
on command is issued.
Status with download and
bus failure
After download or with bus voltage
failure…
OFF
..the relay switches off.
ON
..the relay switches on.
unchanged
…the relay remains in the same state as
before.
If several switching operations were
executed immediately before the
bus failure, the energy may not be
sufficient for an additional switching
operation.
In this case, the relay remains in its
previous state, regardless of the
parameter setting.
Status with restoration of
the bus supply
After return of bus voltage…
OFF
..the relay is switched off.
ON
..the relay switches on.
same as before
failure
…the relay remains in the same state as
before.