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MB-DIO4/2-IP Modbus/BACnet 230 V

942875
945071
945066
Description

The MB-DIO4/2-IP 230 V module in IP65 housing with 4 digital inputs and 2 relay outputs is developed for decentralized switching tasks. Suitable, for example, to accommodate light switches and window contacts in a room, and to switch light strips or to use as blinds control. Motor-driven actuators (e.g. ventilation or fire dampers) can be controlled. Depending on the operating mode, the module can be switched or requested with Modbus standard registers or with BACnet objects. For manual control, the relay outputs are equipped with switches. The settings of the operating mode, bit rate and parity are made via two rotary switches. Operating mode, bit rate and parity also adjustable via software.

  • for the control of up to two actuators, e.g. fire dampers
  • Connection options for actuators with open connection lines with pluggable push-in technology
  • Supply voltage is also switching voltage
  • Relay output suitable for inrush current 65 A < 20 ms (NO), continuous current 6A, total current 8 A
  • generous space for installation - no additional distribution box required
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BACnet is a registered trademark of ASHRAE. ASHRAE does not endorse, approve or test products for compliance with ASHRAE standards. Compliance of listed products to the requirements of ASHRAE Standard 135 is the responsibility of BACnet International (BI). BTL is a registered trademark of BI.

Technical Data
General Data
Modbus RTU / BACnet MS/TP
00 to EF
00 to EF
1200 to 115200 bit/s
19200 Bit/s Even
RS485 (two-wire bus)
230 V AC +/- 10% / 50 Hz
12 mA
1
4
Contact
2 changeover contacts (DPST)
6 A per relay (65 A for 20 ms NO) max. current 8 A
175 x 75 x 175 mm
703 g
any
-5 °C to 55 °C
-20 °C to 70 °C
IP65
LED green, red, yellow
Check US distributor inventory
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Part number
1108120526IP
4251394658377
Downloads
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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