MR-DI4-IP65 Modbus RTU, with external display

Description

The Modbus module in a surface mounting housing with 4 digital inputs was developed for decentralized switching tasks. It is suitable for detecting potential-free switch states from electrical limit switches and their external status display such as fire dampers or vent valves. The inputs can be operated by means of potential-free switches or contacts or used as voltage inputs. The inputs can be scanned by means of standard registers via a Modbus master. Module address, bit rate and parity are set with two rotary switches or by software.The device has two externally connectable display modules.

Technical Data

General Data

Protocol

Modbus RTU

Address range

00 to 99

Bus interface

RS485 (two-wire bus)

Transmission rate

1200 to 115200 bit/s

Operating voltage

24 V AC/DC +/- 10% (SELV)

Current consumption

50 mA (AC) / 20 mA (DC)

Relative duty cycle

100 %

Inputs

4 x digital

Input / voltage

30 V AC/DC

Input / high signal

more than 7 V AC/DC

Display (internal)

Green, red and yellow LED

Display (external)

multi color LED

Connection display (external)

2x RJ45

Dimensions (W x H x D)

160 x 40.7 x 120 mm

Weight

300 g

Operating temperature range

-5 °C to 55 °C

Storage temperature range

-20 °C to 70 °C

Ingress protection for housing / terminal blocks

IP20 / IP20

Check US distributor inventory

Accessories

HUB DC

Power supply NG4 24 V DC

Part number

Part number:

110834131901IP

EAN:

4250184162957

Downloads

Brochure (Modbus RTU components)
3D-Data - Registration required -
Mounting note (110834131901IP MR-DI4-IP)
Mounting note (Safety Instructions multilingual )
Data sheet

FAQ's

What can I do if the red ERROR LED on the module lights up or there is no communication?

There are several possible causes, please check the following:

- Operating voltage (A1 / A2) connected and sufficient for the device.
- BUS (A- / B+) connected and not reversed. Pay attention to (- / +), not to A/B.
- Address (rotary switches) set correctly, must not occur twice or be 0.
- Bit rate and parity (rotary switches) set correctly, only possible in programming mode (see mounting note).
- Shielded and twisted pair cable used.
- Termination resistor (120 Ω) set on both sides.
- Bias resistors available on the BUS.
- Timeout high enough for all participants to respond (approx. 10 ms).

What can I do if the red ERROR LED on the module lights up or there is no communication?

There are several possible causes, please check the following:

- Operating voltage (A1 / A2) connected and sufficient for the device.
- BUS (A- / B+) connected and not reversed. Pay attention to (- / +), not to A/B.
- Address (rotary switches) set correctly, must not occur twice or be 0.
- Bit rate (rotary switches) set correctly, only possible in programming mode (see mounting note).
- Shielded and twisted pair cable used.
- Termination resistor (120 Ω) set on both sides.
- Bias resistors available on the BUS.
- Max Master as high as the number of physical master I/Os on the BUS.
- Max Frame high enough for all answers from participants to get through (BMT-RTR setting).

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Additional Information

I/O components – Automation in buildings, systems and machinery