Technische Alternative CAN-I/O45 User manual

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Manual Version 1.15 English
CAN-I/O 45
CAN-I/O Module 45
Installation instructions
User manual

Table of contents
Manual version V1.15 EN
Safety requirements ............................................................................................................................4
Maintenance........................................................................................................................................4
Disposal...............................................................................................................................................4
Standard delivery.................................................................................................................................5
Installing the device.............................................................................................................................5
Mounting dimensions ............................................................................................................................... 5
Sensor installation...............................................................................................................................6
Electrical connection ...........................................................................................................................7
Power supply ........................................................................................................................................ 7
Terminal diagram and jumpers ................................................................................................................ 8
Sensor leads .............................................................................................................................................. 9
Sensor terminal diagram ..................................................................................................................... 9
Data cable for DL BUS.............................................................................................................................10
Terminal diagram, DL BUS data cable .............................................................................................. 10
BUS load from DL sensors................................................................................................................. 10
CAN BUS network....................................................................................................................................11
Terminal diagram, CAN BUS cable.................................................................................................... 11
Guidelines for the topology of a CAN network.................................................................................11
Technical principles ...................................................................................................................... 11
Lightning protection ...................................................................................................................... 12
Examples of different network versions......................................................................................12
Cable selection and network topology ............................................................................................. 14
Outputs.....................................................................................................................................................17
Terminal diagram, switching outputs ...............................................................................................17
Diagram of switching outputs ..................................................................................................... 17
Terminal diagram for analogue outputs (0-10 V / PWM)................................................................ 18
Connection auxiliary relay HIREL-230V ............................................................................................19
HIREL-230V wiring diagram.......................................................................................................... 19
Technical data .................................................................................................................................. 20
Tips on troubleshooting.................................................................................................................... 21
Troubleshooting in the CAN network.....................................................................................................23
User manual ..................................................................................................................................... 25
LED status indicators..............................................................................................................................25
Status indicators at module start......................................................................................................25
Operation via UVR16x2 or CAN-MTx2 ................................................................................................... 26
User levels........................................................................................................................................... 26
Information displayed on the controller ........................................................................................... 27
Main menu display ........................................................................................................................ 28
Function overview display ............................................................................................................29
Status line ...................................................................................................................................... 33
Function overview ..............................................................................................................................35
Changing values ............................................................................................................................36
The most important functions...................................................................................................... 38
Messages............................................................................................................................................46
Sensor and bus errors................................................................................................................... 46
Operation via C.M.I..................................................................................................................................47
Changing a value................................................................................................................................ 48

Installation instructions
4
Safety requirements
These instructions are intended exclusively for authorised contractors.
All installation and wiring work on the controller must only be carried out in a
zero volt state.
The opening, connection and commissioning of the device may only be carried
out by competent personnel. While doing so, they must observe all local safety
requirements.
This device is state of the art and meets all necessary safety regulations. It may only be used in
accordance with the technical data and the safety requirements and regulations listed below. When
using the device, also observe the statutory and safety regulations apposite to the particular use. Any
other use will automatically void all warranty rights.
►The device must only be installed in a dry interior room.
►It must be possible to isolate the module from the mains, in accordance with local regulations,
using an omnipolar isolating facility (plug/socket or 2-pole isolator).
►Before starting installation or wiring work, the module must be completely isolated from the mains
and protected against reconnection. Never interchange the safety low voltage connections (e.g.
sensor connections) with the 230 V connections. Destruction and life threatening voltages at the
device and the connected sensors may occur.
►Solar thermal systems can become very hot. Consequently there is a risk of burns. Proceed with
caution when fitting temperature sensors.
►For safety reasons, the outputs should only be left in manual mode when testing. In this operating
mode, no maximum temperatures or sensor functions are monitored.
►Safe operation is no longer possible if the module or connected equipment exhibits visual damage,
no longer functions or has been stored for lengthy periods in unsuitable conditions. If this is the
case, disable the controller and equipment and secure against unintentional use.
Maintenance
If treated and used correctly, the device will not require any maintenance. Use a cloth moistened with
mild alcohol (such as methylated spirits) to clean. Never use corrosive cleaning agents or solvents
such as chloroethylene or trichloroethylene.
No components relevant to long term accuracy are subject to loading if the device is used correctly.
Consequently long term drift is extremely low. The device therefore cannot be calibrated. Thus
applying any compensation is impossible.
The design characteristics of the device must not be changed during repairs. Spare parts must
correspond to the original spare parts and must be used in accordance with the build version.
Disposal
➢Devices no longer in use or beyond a state of repair must be disposed of in an
environmentally responsible manner by an authorised collection point. They must
never be treated as ordinary household waste.
➢We can undertake the environmentally responsible disposal of devices sold by
Technische Alternative upon request.
➢Packaging material must be disposed of in an environmentally responsible
manner.
➢Incorrect disposal may result in considerable damage to the environment, as many
of the materials used require professional handling.

Installation instructions
5
Standard delivery
•CAN-I/O45 CAN extension module
•Operating instructions
•7x 2-pole terminal
•3x 4-pole terminal
•1x 3-pole terminal
•Wall plugs
•Clamping plate screw
Installing the device
CAUTION: CAUTION: Before opening the enclosure always switch off the
power supply!
Only work inside the module when the power supply is at zero volt.
Unscrew the 4 screws on the front and lift the cover.
Screw the casing tray to the flat mounting surface using the supplied fastenings fitted through the
two holes provided.
Mounting dimensions

Installation instructions
6
Sensor installation
Correct arrangement and installation of the sensors is extremely important for correct functioning of
the system. To this end, also ensure that they are completely inserted in their sensor wells. The cable
fittings provided serve as strain relief. When used outdoors, no water must be allowed to penetrate
the sensor wells (risk of frost). The contact sensors must be insulated well to protect them from
being influenced by the ambient temperature.
Fundamentally, sensors should not be exposed to moisture (such as condensation) since this can
diffuse through the cast resin and damage the sensor. If this happens, heating the sensor to 90 °C for
an hour may help. When using sensor wells in stainless steel cylinders or swimming pools, particular
attention must be given to their corrosion resistance.
Collector sensor (grey lead with junction box):
•Either insert into a pipe which is brazed or riveted directly to the absorber and protrudes from the
collector housing,
•or insert a tee into the flow manifold of the outermost collector into which the sensor well,
together with the brass cable fitting (= protection against moisture), can be inserted; then insert
the sensor.
•To protect against lightning damage, the junction box has a surge protection (voltage dependent
resistor) which is clamped in parallel between the sensor and the extension cable.
Boiler sensor (boiler flow): This sensor is either inserted into a sensor well in the boiler or fitted to the
flow line as close to the boiler as possible.
DHW cylinder sensor: The sensor required for the solar thermal system should be used with a sensor
well for finned tube heat exchangers just above the exchanger or, if integrated smooth tube heat
exchangers are used, in the lower third of the exchanger or the exchanger’s return outlet so that the
sensor well protrudes into the heat exchanger tube. The sensor monitoring the heating of the DHW
cylinder by the boiler is installed at a level corresponding to the amount of domestic hot water
required during the heating season. The supplied cable fitting acts as strain relief. Installation below
the associated coil or heat exchanger is not permissible under any circumstances.
Buffer sensor: The sensor required for the solar thermal system is fitted in the lower section of the
cylinder just above the solar indirect coil using the sensor well supplied. The supplied cable fitting
acts as strain relief. As the reference sensor for the heating system hydraulics, it is recommended to
insert the sensor into the sensor well between the centre and upper third of the buffer cylinder, or
positioned against the cylinder wall underneath the insulation.
Pool sensor (swimming pool): Fit a tee into the suction line immediately on the pool outlet and insert
the sensor with a sensor well. In the process, ensure the material used is corrosion-resistant. A
further option would be to fit the sensor as a contact sensor with appropriate thermal insulation
against ambient influences.
Contact sensor: Use scroll springs, pipe clips, etc. to attach the contact sensor to the respective line.
Ensure the material used is suitable (corrosion, temperature resistance, etc.). Then insulate the
sensor thoroughly so that the pipe temperature is captured accurately and ambient temperatures
cannot falsify the result.

Installation instructions
7
DHW sensor: A rapid reaction to changes in the water volume is extremely important when using the
controller in systems that generate domestic hot water by means of an external heat exchanger and
variable speed pump (freshwater module). Therefore fit the DHW sensor directly on the heat
exchanger outlet. This ultra-quick sensor (special accessory, type MSP ...) should protrude into the
output with the aid of a tee sealed in with an O-ring. The heat exchanger should be installed upright
with the DHW outlet at the top.
Radiation sensor: The parallel collector orientation is important in order to obtain a measurement
that corresponds to the collector position. Consequently it should be secured to the sheet steel
covering or adjacent to the collector on an extension of the mounting rail. To this end, the sensor
casing has a blind hole that can be opened at any time. The sensor is also available as a wireless
version.
Room sensor: This sensor is intended for installation in the living space (reference room). Do not
install the room sensor near a heat source or window. By simply replugging a jumper inside the
sensor, each room sensor can also be used exclusively as a remote adjuster (no room temperature
influence). It is only suitable for operation in dry rooms. The sensor is also available as a wireless
version.
Outside temperature sensor: This sensor is installed on the coldest wall (usually facing north) some
two metres above the ground. Avoid temperature influences from nearby air shafts, open windows,
cable ways, etc. It must not be subjected to direct insolation.
Electrical connection
This must only be carried out by a qualified electrician in accordance with the relevant local
regulations.
Note: In line with regulations, the system must be equipped with protection against lightning (surge
arrester). Sensor failures due to thunderstorms and static electricity are usually the result of missing
or incorrect earthing or missing surge protection.
Caution: Only work inside the module when the power supply is at zero volt. Assembling the device
with the power connected may result in damage.
Connect all sensors and pumps/valves as they are numbered in the respective program.
In the mains voltage range, fine wire cross-sections of 0.75 - 1.5 mm² are recommended, except for
the supply cable.
Dedicated terminals are provided for connection of the earth conductor (PE).
To prevent device malfunctions, observe the following:
1. All lines carrying mains power (230 V) must be kept as short as possible inside the enclosure
and must not be routed via the components on the low voltage side (processor etc.).
2. The 230 V lines must be fed into the enclosure through the feedthroughs closest to the 230 V
terminals.
3. Sensor, CAN bus and DL bus lines must therefore not be fed in through the feedthroughs on
the 230 V side.
Power supply
Power is supplied by a UVR16x2 or UVR1611 controller or by an external 12 V power supply unit, via
the terminals +12 V and earth at the CAN bus connection.
The mains power connection is therefore only used to supply power to the outputs, not to the
electronics.

Installation instructions
8
Terminal diagram and jumpers
All lines carrying mains power (230 V) must be kept as short as possible inside the enclosure and
must not be routed via the components on the low voltage side (processor etc.).
230 V connections
S3: N/O contact A3
S2: N/O contact A2
N: Neutral
conductor
Earth conductor PE
S: N/O contact A1
Ö: N/C contact A1
N: Neutral
conductor
Earth conductor PE
L: Mains phase conductor
N: Mains neutral conductor
Earth conductor PE
Fuse
⊥: Sensor earth
Input 4
⊥: Sensor earth
Input 3
⊥: Sensor earth
Input 2
⊥: Sensor earth
Input 1
CAN BUS
⊥: Earth
Analogue output A5
⊥: Earth
Analogue output A6
⊥: Earth
Data line
(DL bus)
Termination
Jumpers for 0-10 V
measurement
on inputs 4 and 5

Installation instructions
9
Sensor leads
Sensor terminal diagram
By repositioning the jumper, the inputs IN3 and IN4 can be switched to measuring voltage up to 10 V.
However, sensor values can then no longer be recorded.
Example:
Input IN4 as sensor input Input IN4 as 0-10 V input
Sensors are always connected across the relevant sensor terminal (IN1 –IN4) and sensor earth (⊥).
In order to prevent measurement fluctuations and ensure perfect signal transmission, sensor leads
must not be subject to external negative influences through 230 V cables.
Never run sensor leads together with mains voltage cables in the same conduit.
When using non-screened cables, route sensor leads and 230 V cables either in separate cable
conduits or with a minimum clearance of 5 cm.
Sensor leads for PT100 or PT500 sensors must be screened.
If screened cables are used, the screen must be connected to the sensor earth (⊥).
All sensor leads with a cross-section of 0.5 mm2can be extended to up to 50 metres. With this lead
length and a PT1000 temperature sensor, the measuring error is approximately +1 K. A
correspondingly larger cross-section is required for longer leads or a lesser measuring error.
Jumper
Sensor 1
Sensor 2
Sensor 3
Sensor 4
Jumper

Installation instructions
10
Data cable for DL BUS
Terminal diagram, DL BUS data cable
The DL bus consists of just 2 wires: DL and sensor earth (⊥). The DL BUS itself supplies the necessary
power for the DL BUS sensors.
Cables can be routed with a star topology but also in serial formation (from one device to the next).
Any cable with a cross-section of 0.75 mm², and measuring up to 30 m in length, can be used as a
data link. For lengths greater than 30 m, the use of screened cables is recommended, which increases
the reliable length of the cable to 100 m. If screened cables are used, the screen must be connected
to the sensor earth (⊥).
Long cable conduits routed closely next to each other for mains and data cables result in faults being
induced into the data cables from the mains. We therefore recommend a minimum clearance of
20 cm between two cable conduits or the use of screened cables.
Use separate, screened cables when capturing data from two controllers with a single datalogger.
Never run the data cable together with a CAN BUS cable in the same conduit.
BUS load from DL sensors
A 2-pole cable provides both the power supply and the signal transfer from DL BUS sensors. An
additional power supply by means of an external power supply unit (such as with the CAN BUS) is not
possible.
Take the "BUS load" into consideration as sensors have a relatively high current demand:
The module supplies the total BUS load. The BUS loads of the electronic sensors are listed in the
technical data of the relevant sensors.
Example: The electronic sensor FTS4-50DL has a BUS load of 25 %. Consequently, up to four FTS4-
50DL can be connected to the DL BUS.

Installation instructions
11
CAN BUS network
Terminal diagram, CAN BUS cable
Guidelines for the topology of a CAN network
Technical principles
The CAN BUS comprises the cables CAN-High,
CAN-Low, GND and one +12 V supply cable for BUS
components without their own power supply. The
combined total load of all devices with 12 V and
24 V supply must not exceed 6 W.
Design CAN networks in a linear fashion and set a
terminator at each network termination. This is
ensured by the termination of the end devices.
In the case of larger networks (covering several
buildings), problems can occur through
electromagnetic interference and potential
differences.
To avoid or to the greatest extent manage such
problems, take the following measures:
•Cable screening
The BUS cable screen must be connected well at every node to provide continuity. For larger
networks we recommend including the screen in the equipotential bonding, in line with the
examples shown.
•Equipotential bonding
As low an ohm connection as possible to the earth potential is particularly important. Where
cables enter buildings, ensure that the cable entries are in the same location where possible
and that all are connected to the same equipotential bonding system (SingleEentryPoint
principle). The purpose is to create potentials that are as similar as possible, in order to
achieve the smallest possible potential difference to adjacent lines in case one line suffers a
voltage surge (lightning strike). Also ensure a corresponding clearance between the cable
and lightning protection systems.
The equipotential bonding also has positive properties to counteract interferences emitted
from linked cables.
CH1 –CAN-H
1V/Div.
CH2 –CAN-L
1V/Div.
Time/Div.
250µs
2.5V
CAN-H and CAN-L data signals
CH1 - CAN-H
CH2 - CAN-L
Jumper for termination, here: terminated

Installation instructions
12
•Avoiding earth loops
Where a BUS cable is routed between several buildings, ensure that earth loops are avoided.
The reason for this is that buildings actually have different potentials compared to the earth
potential. An earth loop is created when connecting one cable screen in each building
directly with the equipotential bonding system. In other words, a current flows from the
higher to the lower potential.
For example, if lightning strikes near one of the buildings, the potential of that building will
briefly be raised by several kV.
In this case, the equalising current flows to earth via the BUS screen and causes an extreme
electromagnetic input which can result in the destruction of the BUS components.
Lightning protection
Efficient lighting protection is highly dependent on good building earthing that meets the relevant
regulations.
An external lightning protection system offers protection against a direct lightning strike.
In order to protect against voltage surges in the 230 V mains supply cable (indirect lightning strike),
appropriate lightning conductors and surge arresters compliant with local regulations must be fitted
in the upstream distribution systems.
In order to protect the individual components of a CAN network against indirect lightning strike, we
recommend the use of surge arresters specifically developed for BUS systems.
Examples: CAN bus surge arresters CAN-UES from Technische Alternative
Gas discharge arrester for indirect earthing EPCOS N81-A90X
Examples of different network versions
Key to symbols:
… device with its own power supply (UVR16x2, UVR1611K, UVR1611S, UVR1611E)
… device is supplied by the BUS (CAN I/O, CAN-MT, …)
… CAN BUS converter (CAN-BC2)
… terminated (end devices) … open termination
… CAN BUS surge arrester . .. gas discharge arrester for indirect earthing
"Small" network (within one building):
Max. cable length: 1000 m at 50 kbit/s
The screen must be continued at each network node and be connected to the device earth (GND). The
screen earthing or GND must only be implemented indirectly via a gas discharge arrester.
Ensure that no unintentional direct connection of earth or screen and the earth potential is created
(e.g. via sensors and the earthed pipework).
Indirect earthing (optional)
Screen
Screen
Screen

Installation instructions
13
Network (across several buildings) without CAN bus converter CAN-BC2:
Max. cable length: 1000 m at 50 kbit/s
The screen must be continued at every network node and earthed at a single point, as close to the
cable centre as possible. We recommend earthing the screen indirectly in the other buildings using a
gas discharge arrester. The screen is not connected with the earth (GND) of the devices.
Network (across several buildings) with CAN BUS converter CAN-BC2:
Maximum cable length: subject to the set Baud rate CAN-BC2
The screen of the disconnected network is connected at each BUS converter to CAN BUS earth
(GND). This screen must not be directly earthed.
Without CAN BUS surge arresters, this version only protects against potential differences up to 1 kV,
therefore cannot be considered as lightning protection. In this case, the cable screen must be earthed
at a single point between the CAN bus converters, as close to the cable centre as possible. We
recommend earthing the screen indirectly in the other buildings using a gas discharge arrester.
A CAN bus converter is similar to a repeater. It receives CAN bus signals and passes them on. Each
cable run on either side of the CAN bus converter must therefore be viewed as an independent CAN
bus network.
Indirect earthing
Optiona
l
Optiona
l
Indirect earthing
Optional
Indirect earthing
Indirect earthing
Indirect earthing
optional

Installation instructions
14
Cable selection and network topology
Screened twisted pairs have proven useful in CANopen networks. These are cables with twisted pairs
of conductors and a shared external screen. Such cables are relatively resistant to EMC interference
and can still carry 50 kbit/s for up to 1000 m. The CANopen recommendations (CiA DR 303-1) for
cable cross-sections are given in the table below.
BUS length
[m]
Resistance in terms of
length [mΩ/m]
Cross-section
[mm²]
0…40
70
0.25…0.34
40…300
< 60
0.34…0.60
300…600
< 40
0.50…0.60
600…1000
< 26
0.75…0.80
The maximum cable length also depends on the number of nodes [n] linked with the BUS cable and
the cable cross-section [mm²].
Cable cross-section
[mm²]
Maximum length [m]
n=32
n=63
0.25
200
170
0.50
360
310
0.75
550
470
BUS rate
In the CAN bus / CAN settings menu of the module, the bus rate can be set to between 5 and
500 kbit/s. Lower bus rates allow the use of longer cable networks. However in this case, the cable
cross-section must be increased accordingly.
The standard BUS rate of the CAN network is 50 kbit/s (50 kBaud), which is specified for many CAN
BUS devices.
Important: All devices in the CAN BUS network must have the same transfer rate in order to be
able to communicate with each other.
BUS rate [kbit/s]
Maximum permissible total BUS length [m]
5
10000
10
5000
20
2500
50 (standard)
1000
125
400
250
200
500
100
Recommendations
A 2x2-pole, screened twisted pair (twist CAN-L with CAN-H or +12 V with GND) with a cable cross-
section of at least 0.5 mm² and a conductor-to-conductor capacity of no more than 60 pF/m and a
nominal impedance of 120 ohms. The standard BUS speed of the UVR16x2 is 50 kbit/s. This
recommendation corresponds, for example, to cable type Unitronic®-BUS CAN 2x2x0.5 supplied by
Lapp Kabel for permanent installation in buildings or conduits. Theoretically this would enable a BUS
length of approx. 500 m to guarantee reliable transmission.
For direct routing underground, earth cable 2x2x0.5 mm² supplied by HELUKABEL, part no. 804269,
or earth cable 2x2x0.75 mm² supplied by Faber Kabel, part no. 101465, would be suitable.

Installation instructions
15
Wiring
A CAN BUS network should never have a star topology. Rather, the correct topology is a line from the
first device (with terminator) to the second, third and so forth. The last bus device has the termination
jumper again.
INCORRECT CORRECT
Example: Connection of three network nodes (NWN) with a 2x2-pole cable and termination of the
terminal network nodes (network inside one building)
Each CAN network is to be provided with a 120 ohm BUS terminator at the first and last network
subscriber (= termination). This is achieved with a plug-in jumper at the back of the controller. Each
CAN network therefore always has two terminators (one at each end). Branch cables or a star
topology are not permissible for CAN wiring.
Plug left =
terminated
Plug right = not
terminated

Installation instructions
16
Branch cables
A CAN bus converter is used to provide reliable long branch cables. This means the branch cable is
disconnected from the other CAN bus network and can be viewed as an independent CAN bus
network.
Trials at the factory have shown the following:
1) Branches with a star topology of up to 10 m will not impede transmission.
2) Up to a bus length of 250 m and a transfer rate of 50 kbit/s, data transfer works perfectly with a
low number of CAN nodes and an inexpensive J-Y(St)Y EIB KNX 2x2x0.8 KNX bus cable with a
characteristic impedance of 75 to 90 ohm.
3) Up to a bus length of 150 m and with only a few nodes, the CAT 5 24AWG cable (typical Ethernet
cable in PC networks) can be used.
Changing to cable types with different characteristic impedances is only permitted via signal
separation through a CAN bus converter.
However, such networks do not comply with the recommended specification. Technische Alternative
RT GmbH therefore cannot guarantee trouble-free operation if one of the three options listed above is
applied.
Independent CAN
bus network

Installation instructions
17
Outputs
Terminal diagram, switching outputs
Diagram of switching outputs
S, S2, S3: N/O contact A1, A2, A3
Ö: N/C contact A1
N: Neutral conductor
L: Phase conductor
For maximum current load of the outputs, see the technical data.
Earth
conductor
terminal
Outputs
A2 + A3
Output
A1
Mains connection
Mains
Output A1
Output A2
Output A3

Installation instructions
18
Terminal diagram for analogue outputs (0-10 V / PWM)
The connections A4 and A5 are the positive poles; the connections ⊥are the negative poles.
When programmed as a "switching output", a HIREL-230V or HIREL-PF auxiliary relay can be
connected.
Output A4
Output A5

Installation instructions
19
Connection auxiliary relay HIREL-230V
Example: Connection HIREL16x2 for analogue outputs A4 and A5.
Program outputs A4 and A5 as switching outputs.
The auxiliary relay cannot be integrated in the module; it requires its own enclosure.
HIREL-230V wiring diagram
Both relay outputs are protected by the fuse on the relay module. Terminal "W" therefore corresponds
to phase conductor "L".
If the fuse is removed, both outputs will be potential-free whilst remaining connected to one another
via root "W".
Relay 1:
Ö1... Normally closed contact
(N/C)
S1... Normally open contact (N/O)
W/L... Root C
Relay 2:
Ö2... Normally closed contact
(N/C)
S2... Normally open contact (N/O)
W/L... Root C
Mains connection
230V
Relay 1
Relay 2
Fuse 6,3A fast
HIREL-230V

Installation instructions
20
Technical data
All inputs
Temperature sensors of type PT1000, KTY (2 kΩ/25 °C), KTY
(1 kΩ/25 °C), PT100, PT500, Ni1000, Ni1000TK5000 and room
sensors RAS or RASPT, radiation sensor GBS01, thermocouple THEL,
humidity sensor RFS, rain sensor RES01, pulses max. 10 Hz (e.g. for
flow rate transducer VSG), voltage up to 3.3 V DC, resistance
(1-100 kΩ), and as a digital input
Inputs 3, 4
Auxiliary voltage (0-10 V DC) (note jumper position)
Outputs 1
Relay output, with N/O contact
Output 2 - 3
Relay output, with NO contact
Outputs 4 - 5
Analogue outputs 0-10 V (max. 20 mA) or PWM (10 V/1 kHz), or
expansion option as switching outputs with auxiliary relay modules
Max. bus load
(DL bus)
100 %
CAN bus
Standard data rate 50 kbit/s, adjustable from 5 to 500 kbit/s
Differential
temperatures
With separate start and stop differential
Threshold values
With separate start and stop differential or fixed hysteresis
Temperature measuring
range
PT100, PT500, PT1000: -200 °C to +850 °C with a resolution of 0.1 K
All other temperature sensors: -49.9 °C to +249.9 °C with a resolution
of 0.1 K
Temperature accuracy
Typ. 0.4 K, max. ±1 K within a range of 0 - 100 °C for PT1000 sensors
Resistance accuracy
max. 1,6% at 100kΩ (measured variable: Resistance, process variable:
Resistance)
Voltage accuracy
Typ.1 %, max. 5 % of maximum input measuring range
Output 0-10V accuracy
Max. -2% to +6%
Max. breaking capacity
Relay outputs 230V / 3A each
Fuse
Relay outputs are fused jointly with 3.15 A (delay)
IP rating
IP40
Protection class
II –double insulated
Permissible ambient
temperature
+5 to +45 °C