Universal Relay Type UR840IP
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Web-IO universal limit value relay with Ethernet interface, built-in web server and 8 inputs for temperature sensors or other analog signals. The UR840IP can be connected to the internet or an intranet and operated via TCP/IP from a normal PC with a suitable browser.
The device can simultaneously evaluate and monitor up to 8 different input signals. Each of the 4 output relays can be assigned up to 8 limit values, one per input. If a limit value is reached, an alarm is triggered and a relay switches. Example: Alarm 1 is activated when a temperature is exceeded at sensor input 3 (e.g. Pt 100) or the signal from a pressure transmitter (e.g. 4-20 mA) at input 5 falls below a limit value. The device also has an RS485 interface (Modbus RTU) or analogue outputs 0/2-10 V or 0/4-20 mA.
Accessory: Installation frame ER8 for panel mount
Applications
The UR840IP is used where one or more of the following features a required:
- The UR840IP is used to advantage wherever the following features are required
- monitor up to 8 different analogue measured values and transfer them to the Internet
- Measured value query and remote maintenance via intranet/internet
Discover the difference between our TR800Web and the new UR840IP!
|
Features |
TR800Web |
UR840IP |
|
Inputs |
8 analog inputs |
8 analog inputs, 4 digital outputs |
|
Sensors |
Pt100, Pt1000, KTY83/84, thermoecouples (Type B, E, J, K, L, N, R, S, T), DC 0-10 V, DC 0/4-20 mA, resistance 0-500 Ohm, 0-30 kOhm |
Pt100, Pt1000, PTC, thermocouples (Type B, E, J, K, L, N, R, S, T), DC 0/2-10 V, DC 0/4-20 mA, resistance 0-500 Ohm, 0-30 kOhm |
|
Alarms |
4 relays, programmable, E-mail notification in the event of alarms |
4 relays, programmable, Alarm triggering of 2 of x sensors possible |
|
Interfaces |
Ethernet (HTTP, HTTPS, UDP, Modbus), RS485 (Modbus RTU, ZIEHL-protocol) |
Ethernet (HTTP, Modbus TCP), RS485 (Modbus RTU), 2 x analog outputs (1x voltage, 1x current) – optional RS485 or analog can be activate in the menu |
|
Web-Interface |
Operation and programming via web browser |
Operation and programming via web browser |
|
Data logging |
Up to 150.000 values per input, interval 2 seconds to 24 hours |
Per input, interval 10 seconds to 30 minutes |
|
Supply voltage |
AC/DC 24-240 V, 0/50/60 Hz, 4-13 VA |
AC/DC 24-240 V, 0/50/60 Hz, 4-11 VA |
|
Special features |
Day/night switchover for limit values, E-mail notification |
Joystick and LCD display for easy operation |
| Product group: | Temperature Measurement, New Products |
|---|---|
| Input/ Measured parameter: | Resistance/conductance, Measuring input other temperature sensors, Standard signals 0/4-20 mA, 0-10 V, PTC, Digital input, Pt 100 |
| Outputs: | Analog outputs 0/4-20 mA, 0-10 V, Outputs/Relays, > 2 outputs, Ethernet TCP/IP, Interface/Bus |
| Supply voltage: | AC/DC 24 - 270 V |
| Design: | Mount in switchgear cabinet, Mount in circuit breaker box |
| Approval: | EU / UKCA-Declaration of Conformity |
| Extras: | 3 or more sensor inputs, UR-Series |
| Applications: | Protection of transformers, Protection of motors |
Technical specifications
CAD Data
Applications / Hints
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FAQ / Product videos
Accessories
You found a device in that meets your requirements and you want to install it in a control panel or in the door of a control cabinet?With the installation frame of the ER series, this is possible for all ZIEHL devices in housings V4, V6 and V8 (width 70/105/140 mm).Enclosed by a high-quality frame made of anodized aluminum, all displays can be read outside the control cabinet. Switches, buttons and joystick can be operated.
Relay extension box type URB40, for universal relay box type URThe URB40 universal relay box is an extension box for UR devices that can be used to control up to four additional relay outputs via Modbus RTU. The URB40 monitors the communication between the devices and can transfer each relay output to a predefined state in the event of a timeout. The device has no operating elements and is controlled and configured exclusively via the RS-485 interface.Accessory: Installation frame ER4 for panel mount ApplicationsWith the URB40, an additional four alarms and relays are available, and the device can also be easily operated on other control systems via the integrated RS 485 interface.4 additional alarmsEasy extension of existing control systems of the UR seriesSpace-saving installation
Normal PTC-resistor relays can be tested by simply disconnecting the sensor. PTC-resistor relays with monitoring of sensor short-circuit and break need more sophisticated test-equipment.With help of the ZIEHL MS-Tester also these relays can be easily tested for correct function. The included cable is designed for the connection of relays type MSF 220 V(U). Also any other PTC-resistor relay can be connected to the MS-Tester.Testdisconnect the PTC-resistor relayconnect the MS-Tester (T/0, T/1 and/or T/3) to the sensor inputsswitch on the relayincrease the resistance with the potentiometer (turn slowly) until the appropriate Alarm switchesreduce the resistance until the relay switches back (or a LED signals, that it is ready to switch back)if necessary, the values of the switching points can be measured at the terminals T/0, T/1, T/2 after disconnecting the relay. Typical values are 3000 O ... 4000 O for tripping and >1500 O for switching back.test break with push-button (only at relays with monitoring of sensor/line-break)test short circuit with push-button (only at relays with monitoring of sensor/lineshort-circuit)ATTENTION: At relay MSF 220 V(U), break or short-circuit in any sensor will result in an error message = ALARM 1. The LED "sensor" lights and the LED of the appropriate alarm blinks.HINT: cold PTCs have a resistance of 20...250 O, typical 50...120 O per sensor.
UR Series
Web-IO universal limit value relay with Ethernet interface, built-in web server and 4 inputs for temperature sensors or other analog signals. The UR420IP can be connected to the internet or an intranet and operated via TCP/IP from a normal PC with a suitable browser.The device can simultaneously evaluate and monitor up to 4 different input signals. Each of the 2 output relays can be assigned up to 4 limit values, one per input. If a limit value is reached, an alarm is triggered and a relay switches. Example: Alarm 1 is activated when a temperature is exceeded at sensor input 3 (e.g. Pt 100) or the signal from a pressure transmitter (e.g. 4-20 mA) at input 5 falls below a limit value. The device also has an RS485 interface (Modbus RTU).Accessory: Installation frame ER6 for panel mount ApplicationsThe UR420IP is used where one or more of the following features a required:monitor up to 4 different analogue measured values and transfer them to the InternetMeasured value query and remote maintenance via intranet/internet
Relay extension box type URB40, for universal relay box type URThe URB40 universal relay box is an extension box for UR devices that can be used to control up to four additional relay outputs via Modbus RTU. The URB40 monitors the communication between the devices and can transfer each relay output to a predefined state in the event of a timeout. The device has no operating elements and is controlled and configured exclusively via the RS-485 interface.Accessory: Installation frame ER4 for panel mount ApplicationsWith the URB40, an additional four alarms and relays are available, and the device can also be easily operated on other control systems via the integrated RS 485 interface.4 additional alarmsEasy extension of existing control systems of the UR seriesSpace-saving installation
NEW: Available from 4th quarter of 2025 Web-IO universal limit value relay with Ethernet interface, built-in web server and 2 inputs for temperature sensors or other analog signals. The UR220IP can be operated via NFC or from a normal PC with a suitable browser. In addition, all values and statuses can be queried via Modbus TCP. The device can simultaneously evaluate and monitor up to 2 different input signals. Each of the 2 output relays can be assigned up to 2 limit values, one per input. If a limit value is reached, an alarm is triggered and a relay switches. The device has an analog current and an analog voltage output. Relays can also be switched on or off via the digital input.Example: Alarm 1 is activated when a temperature is exceeded at sensor input 1 (e.g. Pt 100) or the signal from a pressure transmitter (e.g. 4-20 mA) at input 2 falls below a limit value. Accessory: Installation frame ER4 for panel mount ApplicationsThe UR220IP is used where one or more of the following features a required:Monitor up to 2 different analogue measured valuesAccess via web browser to the local networkMonitoring of Pt100, Pt1000, PTC, KTY, analog measured values and resistance measurements
