Weishaupt WEM-KNX User manual

Installation and Operating Manual
Data protocol converter
Gateway WEM-KNX
83320602 ▪1/2021-02

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1User notes................................................................................................................... 5
1.1 Target group ............................................................................................................... 5
1.2 Symbols ...................................................................................................................... 5
1.3 Warranty and Liability ................................................................................................. 6
2Safety ......................................................................................................................... 7
2.1 Proper use .................................................................................................................. 7
2.2 Security measures ......................................................................................................7
2.3 Disposal ...................................................................................................................... 7
3Product description ...................................................................................................... 8
3.1 WEM Interface ............................................................................................................ 8
3.2 KNX Interface.............................................................................................................. 8
3.3 IP Interface ................................................................................................................. 8
4Technical specifications ............................................................................................... 9
4.1 Supply.........................................................................................................................9
4.2 Housing....................................................................................................................... 9
4.3 Environmental conditions............................................................................................9
4.4 Electrical safety...........................................................................................................9
5Assembly and disassembly ........................................................................................ 10
6Installation................................................................................................................. 11
7Operation .................................................................................................................. 12
7.1 Control elements....................................................................................................... 12
7.2 LED display (normal operation)................................................................................. 12
7.3 Configuring with ETS ................................................................................................ 13
7.4 ETS parameters........................................................................................................ 14
7.4.1 WEM devices...................................................................................................... 14
7.4.1.1 WEM system with numbers of WEM devices ............................................... 14
7.4.1.2 Additional information................................................................................... 14
7.4.2 Automatic WEM device search........................................................................... 15
7.4.3 General settings ................................................................................................. 16
7.4.4 Addresses WEM................................................................................................. 16
7.4.5 Parameters of the individual WEM devices (WTC, SG, etc.).............................. 17
7.4.6 Communication objects for WTC ........................................................................ 18
7.4.7 Communication objects for SG ........................................................................... 20
7.4.8 Communication objects for EM-HK..................................................................... 23
7.4.9 Communication objects for EM-WW................................................................... 25
7.4.10 Communication objects for EM-Sol .................................................................. 26
7.4.11 Communication objects for RF ......................................................................... 26
7.4.12 Communication objects for RG1....................................................................... 26
7.4.13 Communication objects for RG2....................................................................... 26
7.4.14 Communication objects for EM-KA................................................................... 26
7.5 Web frontend ............................................................................................................ 27

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7.5.1 Access via IP network, IP address and MAC address........................................ 27
7.5.2 WEM system table.............................................................................................. 27
7.6 Firmware update ....................................................................................................... 28
7.7 Programming mode .................................................................................................. 29
7.8 Reset the device ....................................................................................................... 29
8Commissioning.......................................................................................................... 30
8.1 Programming the individual address......................................................................... 30
8.2 Download the ETS application program.................................................................... 31
9Maintenance.............................................................................................................. 32
10 Notes ........................................................................................................................ 33

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Installation and Operating Manual
Data protocol converter Gateway WEM-KNX
1 User notes
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1User notes
This manual is necessary for the proper operation of the device and should be stored at
the place of use.
This manual must be read carefully before commissioning, installation and mounting as
well as before changing the configuration setting of the device. The notes in the corre-
sponding sections must be observed.
It is supplemented by the short manual for the WEM-KNX Gateway.
1.1 Target group
This operating manual is intended for operators and qualified specialists. It must be ob-
served by all persons who use the device.
Installing and configuring the device may only be carried out by persons that have the
necessary training or instruction.
It is recommended that you participate in the standardized courses of a KNX-certified
training center before installing, programming and commissioning a KNX system. Here,
the participant acquires the necessary knowledge and skills through practical exercises,
which are also necessary for troubleshooting.
1.2 Symbols
DANGER
Indicates an immediate hazard with high risk. Failure to observe
may result death or serious personal injury if it is not avoided.
WARNING
Indicates an immediate hazard with medium risk. Failure to ob-
serve may result death or serious personal injury if it is not
avoided.
CAUTION
Indicates an immediate hazard with low risk. Failure to observe
may result in light or medium personal injury if it is not avoided.
NOTE
Failure to observe may result in damage to property or environ-
mental damage.
Important information.
▶
Prompts for a direct action.
✔
Result after an action.
■
Enumeration
…
Range

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1.3 Warranty and Liability
Warranty and liability claims for personal injury and property damage are excluded if they
are due to one or more of the following causes:
▪Improper use of the device,
▪Failure to observe the installation and operating instructions,
▪operating the device outside the permissible environmental conditions,
▪Continued use despite the occurrence of a defect,
▪Improper assembly, commissioning and operation of the device,
▪Connecting a damaged device,
▪Unauthorized modification of the device,
▪Opening the housing of the device,
▪force majeure.

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2Safety
2.1 Proper use
The gateway is intended for DIN rail assembly and installation in a control cabinet (plus
applicable regulations) as well as continuous operation together with a KNX power sup-
ply.
2.2 Security measures
▪When planning and constructing electrical installations, the relevant guidelines, rules
and regulations of the respective country must be observed.
▪The device may only be installed and put into operation by an electrician or authorized
specialist.
▪Observe the safety instructions and warnings.
▪Use only suitable tools according to IEC60715 for assembly.
▪In the event of faults or error messages, the causes must be found and the error or
failure must be corrected immediately.
▪Electrical work may only be carried out by professionals for electrical installations.
▪Accessibility to the device must always be guaranteed for reasons of usability and in-
spection.
Normal operation
▪After connection to the KNX bus system, the device works as intended.
▪After its first connection, the device works with default settings and can be configured
for normal operation.
▪The configured device will then work as intended for normal operation.
▪The display of the device must be clearly visible and readable.
2.3 Disposal
At the end of its useful life, the product described in this manual is classified as waste
from electronic devices and cannot be disposed together with the general residual waste.
As this product falls within the scope of WEEE Directive 2002/96EC, please leave for re-
cycling in appropriate places. Contact your local waste disposal company for recycling
information.

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3Product description
The WEM system consists of several different devices (WTC, SG, etc.), hereinafter re-
ferred to as WEM devices. Each of these WEM devices contains one or more modules
(module 1, module 2, etc.). The WEM/KNX Gateway enables central control and moni-
toring of WEM devices via the KNX network. To do this, the gateway must be connected
to the system device of the WEM system (via IP). The gateway then provides the bi-di-
rectional data exchange between WEM and KNX TP1, and is used to convert the data.
The data and settings of the WEM devices can be read and updated over the KNX net-
work or vice versa. Data conversion is designed for up to 62 WEM devices. The sending
of data on KNX side is configurable. The firmware can be updated via the IP network (by
using a HTML browser).
3.1 WEM Interface
The data of devices are read out regularly from the WEM system to be stored in the
gateway. For each communication object, it can be set whether a newly saved value is
sent to the KNX bus only on request or automatically. If the automatic sending of a group
object is selected, for numeric values a sending difference can also be set (so that no
unnecessary telegrams are sent when differences are too small). Thus, when the send-
ing difference is set and a parameter value exceeds this difference (between new and
last stored group object value), the value is sent via the communication object to the con-
figured group addresses in the KNX network.
3.2 KNX Interface
On the KNX side, the gateway simulates a KNX device and behaves like a further device
of the KNX system. When a group object of the KNX network changes, this change is re-
ceived via the corresponding communication object, then stored in the gateway and (ac-
cording to the setting) sent to the WEM system to update the corresponding value in the
WEM device.
3.3 IP Interface
Via Ethernet/IP, the gateway can also be accessed directly. For information about actual
settings and addresses stored in the gateway, a web frontend is available. It can be ac-
cessed by a HTML web browser. For example, the device is displayed in the Windows
network and a double-click opens the web frontend in the default browser. All connec-
tion-relevant information is shown here. Also, a table containing the devices of the WEM
system including module addresses (stored as a *.csv on the SD card of the system de-
vice) is displayed in a user-friendly format. Programming mode can be activated and de-
activated remotely, without having to press the on-device programming button. With the
update function, the gateway firmware can be updated via IP. The web frontend can also
be accessed via both the IP address and the MAC address.

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4Technical specifications
4.1 Supply
Input voltage
21...30 V DC SELV
Current consumption
< 20 mA
4.2 Housing
Dimensions (HxWxD)
90 x 36 x 71 mm
Mounting (IEC60715)
35 mm DIN rail (TH35)
Width in space units
2 modules at 18 mm
KNX bus connection
KNX connector (red/black)
IP connection
Ethernet socket (RJ45)
Weight
68 g
4.3 Environmental conditions
Working temperature
-5...45 °C
Storage temperature
-20...60 °C
Ambient humidity
5...93 % (nicht-kondensierend)
4.4 Electrical safety
Pollution degree (IEC60664)
2
Protection type (IEC60529)
IP20
Protection class (IEC61140)
III
Overvoltage category (IEC60664)
II
Approbation (ISO/IEC14543-3)
KNX-certified

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5Assembly and disassembly
The device is intended for the DIN rail assembly in distribution boxes. Only mount on
suitable top-hat rails (TH35) and use a suitable tool according to IEC60715 for assembly.
The device has the protection type IP20, is intended for indoor installation and may only
be installed in dry environments. The device must be protected from moisture, dirt and
damage.
Accessibility to the device must always be guaranteed for reasons of usability and in-
spection. In particular, the display must not be obscured in order to be able to detect
faults or error messages immediately.
In case of damage (during transport, storage) no repair must be carried out and the
housing must not be opened. Do not connect damaged devices.
▶Please return a damaged device.
Procedure
▶If necessary, write down the MAC address before installation (see next image).
▶
▶Pull the fastening clip down with a screwdriver.
▶Place the device on the upper part of the rail.
▶Press the device against the rail until it is vertically placed.
▶Press the attachment clip upwards until it snaps in.
Disassembly
▶Pull the fastening clip down with a screwdriver.
▶Remove the device from the rail.
NOTE
Info for disassembly
Risk of damage.
▶Ensure the network connection was previously disconnected.
▶Ensure the bus terminal is disconnected from the device.

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6Installation
Procedure
▶Mount the device on the rail.
▶Connect the gateway to the IP network with an Ethernet cable.
▶Strip the wires of the bus cable and equip them with a KNX terminal for TP.
▶When stripping/connecting/assembling, always make sure that no electrical insulation
is damaged.
General information on the routing of KNX bus cables can be found in the KNX Associa-
tion's "Basic Knowledge on the KNX Standard" brochure (KNX-Basics_en.pdf).
▶Observe regulations on KNX bus cables and their use and observe the prescribed dis-
tances to higher voltage lines.
▶Connect the KNX TP terminal.
✓Device starts. (If the programming LED flashes, the Ethernet cable is not connected
correctly or no network connection is available.)
NOTE
Do not connect the gateway directly to 230 V!
Risk of damage.
The device is powered by the KNX TP bus system. Information on the supply of KNX bus
lines is available on https://support.knx.org/ and can be found in the installation and op-
erating instructions for KNX bus voltage supply.

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7Operation
7.1 Control elements
LED display
Buttons / connectors
WEM TxD
Ethernet/IP socket
WEM RxD
Function button
KNX active
Programming button
LAN status
KNX TP connector
Programming LED
7.2 LED display (normal operation)
WEM TxD (1)
green (flashing)
Data is sent to WEM
< off >
No traffic
WEM RxD (2)
green (flashing)
Data is received by WEM
orange (ca. 5 s)
Connection attempt failed
(data of an object could not be received)
red
No connection to WEM
(object data cannot be received permanently)
< off >
No traffic
KNX active (3)
green
KNX connection established
< off >
No KNX connection
LAN status (4)
green
Connected via IP
< off >
No IP connection
Programming LED (5)
red
Programming mode active
red (flashing)
No IP connection
< off >
Programming mode not active
1
A
2
B
3
C
4
D
5

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7.3 Configuring with ETS
The ETS can be used to configure the gateway, its connection settings and the
WEM/KNX data conversion. For this purpose, the "Bus Router" application is available
as an ETS database and devices of the WEM system can be searched in ETS. After ac-
tivating the data conversion for a found WEM device, the parameters for setting the
sending condition to KNX are available and the corresponding communication objects
appear in the list of available objects. The sending condition sets whether the value
stored in the gateway is sent only after a request from a KNX device, or automatically af-
ter receiving a new value from the WEM system.
Data exchange WEM -> KNX
Data exchange KNX -> WEM

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7.4 ETS parameters
7.4.1 WEM devices
In order to enable data conversion for individual WEM devices, the gateway must know
the number of active WEM devices and the addresses of the modules they contain. The
registration of devices/modules can be done automatically or manually. After that, they
can be connected via KNX objects, be monitored, and be controlled via KNX. The corre-
sponding ETS windows then open for configuring the data transfer. WEM devices are in-
dicated with numbered name abbreviations.
It is recommended to perform the search of the WEM devices/module addresses with the
automatic device search, as this can avoid incorrect assignments between WEM param-
eters and KNX group objects.
If the addresses used in the WEM system are entered manually, the number of devices
must be set first. Then, the module addresses can be entered.
7.4.1.1 WEM system with numbers of WEM devices
7.4.1.2 Additional information
▪Max. total number of WEM devices = 62
▪Together, no more than 12 devices are possible for EM-HK and EM-WW
▪For RF, RG1 and RG2 together, no more than 32 devices are possible
▪Active WEM devices can only be determined after downloading the application

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7.4.2 Automatic WEM device search
After downloading the application into the gateway by ETS, the automatic device search
with address storage can be used to determine and store the number of active WEM de-
vices and module addresses of the WEM system. Clicking on the 'Search devices' button
starts the search and assigns the found module addresses to the name abbreviation for
the particular WEM device. The total number of active WEM devices is displayed. Under
'Addresses WEM' the assignment of the module addresses to the name abbreviations
can be found.
Note on changes in the WEM system
If the module addresses for one or more WEM devices change, it is recommended to set
the number of all WEM devices in the ETS to 0, then load the application into the gate-
way, and then restart the automatic device search. For example, this is the case when a
device needs to be replaced by another device (with different module addresses). Alter-
natively, an adjustment can also be made manually via the entries for module addresses
under 'Addresses WEM'. When problems occur hereby, it is advisable to set the number
of devices in a product category to 0, then load the application into the gateway and start
configuring again.
If more WEM devices are configured with the ETS than the gateway can detect via the
WEM system table of the WEM system device, or if more WEM devices are configured
with the ETS than are present in the WEM system, a note is shown in ETS.

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7.4.3 General settings
IP configuration WEM
In order to connect to the WEM system, the IP address of the WEM system device must
be entered here. If DHCP is active in the system device, always make sure that the IP
address of the system device assigned by the DHCP server corresponds to the IP ad-
dress entered here.
IP configuration Gateway
Here, the IP connection settings can be entered (host name, DHCP, IP address, default
gateway, DNS server, subnet mask) to reach the gateway and call the web frontend.
Actualization rate of WEM data
The data stored for the WEM devices is continuously updated. For this purpose, the
WEM devices are read out regularly and the refresh rate for reading is adjustable. The
gateway compares the read (WEM) values with the last values stored for the (KNX)
group objects. If a value is different, the new value is sent to the KNX participant(s) that
use that group address, according to the sending condition set for the communication
object. When the data conversion becomes enabled in ETS, the parameters for WEM
are automatically assigned to one of the categories "fast", "average" or “slow”actualiza-
tion and the actualization rate can be adjusted by the corresponding refresh interval set-
ting.
▶Short intervals (s), fast actualization: for rapidly changing process values like boiler
temperature or hot water temperature
▶Medium intervals (m), average actualization: for operating mode value settings etc.
and less important, slower-changing process values (like buffer temperature)
▶Large intervals (l), slow actualization: for example, for energy values
7.4.4 Addresses WEM
Here, the automatic assignment of the active WEM devices and found module addresses
in the WEM system, determined by the ETS device search, can be checked, and also be
changed, if necessary. The corresponding module addresses are given under the name
abbreviations. For entering the module addresses manually, this can be done here.

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7.4.5 Parameters of the individual WEM devices (WTC, SG, etc.)
Activation of group object/communication object sending
For each of the WEM devices, the first thing to do is to activate the parameter and object
sending. Then a naming or description (e.g. ground floor) can be added to each commu-
nication object and the sending condition for sending as a group object can be set.
Adding of naming/description
For each activated parameter, the entered naming appears in the name of the respective
communication object (example: "ground floor").
Set the sending condition
If the sending condition is "only on request" (default value), the gateway sends the cur-
rent value of the group object to the KNX bus only upon request from a KNX device. To
be more specifical, it is sent to the KNX participants who share the affected group object,
i.e. the same group address.
A difference value can be set for numeric values under Send value automatically. This
difference value indicates the difference between the value received from the WEM sys-
tem and the last stored value of the group object (Automatic sending to KNX after
change by at least the difference value).
The difference value can be increased to prevent constant sending at fluctuating values,
to avoid unnecessary traffic and therefore, to reduce the busload.

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7.4.6 Communication objects for WTC
Object name
Object function
Data type
C
R
W
T
U
Actualiz.
Boiler temperature
Actual value
DPT9.001
X
X
-
X
-
s(≥10s)
Operating phase Burner
Burner off
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase Burner
Pre-ventilation
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase Burner
Burner on:
Control operation
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase Burner
Burner on:
Regular operation
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase Burner
Post-ventilation
DPT1.002
X
X
-
X
-
s(≥10s)
Pre-flow set
temperature
Actual value
DPT9.001
X
X
-
X
-
m(≥60s)
Return flow
temperature VPT
Actual value
DPT9.001
X
X
-
X
-
m(≥60s)
Exhaust gas
temperature
Actual value
DPT9.001
X
X
-
X
-
m(≥60s)
System pressure
Actual value
DPT14.058
X
X
-
X
-
m(≥60s)
Operating phase WTC
Normal
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Pump follow-up
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Burner clock lock
Heating
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Lock Minimum
heating capacity
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Gas actuator
adaptation is running
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Delayed heating
operation
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Softstart Warm water
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Regulation control
Remote
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Spreading
feed/exhaust gas
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Spreading
forward/return flow
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Regulation control
Exhaust gas
temperature
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Shutdown
Remote control
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
Shutdown
Minimum circulation
DPT1.002
X
X
-
X
-
s(≥10s)
Operating phase WTC
SCOT calibration
is running
DPT1.002
X
X
-
X
-
s(≥10s)
Daily heat
(previous day)
Total
DPT13.013
X
X
-
X
-
l(≥10min)
Daily heat
(previous day)
Heating operation
DPT13.013
X
X
-
X
-
l(≥10min)
Daily heat
(previous day)
Warm water
operation
DPT13.013
X
X
-
X
-
l(≥10min)
Volume flow VPT
Actual value
DPT9.025
X
X
-
X
-
m(≥60s)
Heat output VPT
Actual value
DPT14.056
X
X
-
X
-
m(≥60s)

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Object name
Object function
Data type
C
R
W
T
U
Actualiz.
Pump performance
internal pump
Set output value
DPT5.001
X
X
-
X
-
m(≥60s)

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7.4.7 Communication objects for SG
Object name
Object function
Data type
C
R
W
T
U
Actualiz.
System
Upcoming error
DPT1.002
X
X
-
X
-
m(≥60s)
System mode
Standby
DPT1.001
X
X
X
X
X
m(≥60s)
System mode
Summer
DPT1.001
X
X
X
X
X
m(≥60s)
System mode
On/Automatic
DPT1.001
X
X
X
X
X
m(≥60s)
Daytime
Actual daytime
DPT10.001
X
X
-
X
-
s(≥10s)
Date
Actual date
DPT11.001
X
X
-
X
-
m(≥60s)
Outdoor temperature
Actual value
DPT9.001
X
X
-
X
-
m(≥60s)
Heat requirement
Heating
Actual value
DPT9.001
X
X
-
X
-
s(≥10s)
Heat requirement
Warm water
Actual value
DPT9.001
X
X
-
X
-
s(≥10s)
Follow-up change
normal
DPT1.001
X
X
X
X
X
l(≥10min)
Follow-up change
inverted
DPT1.001
X
X
X
X
X
l(≥10min)
Follow-up change
temporal
DPT1.001
X
X
X
X
X
l(≥10min)
Follow-up change
Operating hours
DPT1.001
X
X
X
X
X
l(≥10min)
Changing time
Actual value
DPT7.007
X
X
X
X
X
l(≥10min)
Cascade
Calibration
temperature
DPT9.001
X
X
-
X
-
s(≥10s)
Cascade
Set modulation
System HZ
DPT5.004
X
X
-
X
-
m(≥60s)
Cascade
Set modulation
System WW
DPT5.004
X
X
-
X
-
m(≥60s)
Cascade
Set value
System HZ
DPT9.001
X
X
-
X
-
m(≥60s)
Cascade
Set value
System WW
DPT9.001
X
X
-
X
-
m(≥60s)
Set Operating mode
Standby
DPT1.002
X
X
X
X
X
m(≥60s)
Set Operating mode
Time program 1
DPT1.002
X
X
X
X
X
m(≥60s)
Set Operating mode
Time program 2
DPT1.002
X
X
X
X
X
m(≥60s)
Set Operating mode
Time program 3
DPT1.002
X
X
X
X
X
m(≥60s)
Set Operating mode
Summer
DPT1.002
X
X
X
X
X
m(≥60s)
Set Operating mode
Comfort
DPT1.002
X
X
X
X
X
m(≥60s)
Set Operating mode
Normal
DPT1.002
X
X
X
X
X
m(≥60s)
Set Operating mode
Night setback
DPT1.002
X
X
X
X
X
m(≥60s)
Room set temperature
Comfort
DPT9.001
X
X
X
X
X
m(≥60s)
Room set temperature
Normal
DPT9.001
X
X
X
X
X
m(≥60s)
Room set temperature
Night setback
DPT9.001
X
X
X
X
X
m(≥60s)
Pre-flow set
temperature
Comfort
DPT9.001
X
X
X
X
X
m(≥60s)
Pre-flow set
temperature
Normal
DPT9.001
X
X
X
X
X
m(≥60s)
Pre-flow set
temperature
Night setback
DPT9.001
X
X
X
X
X
m(≥60s)