DatasheetThe Modbus Standard Signal AI Module is used for electrical isolated conversion of unipolar standard voltage and current signals. All parameter can be set via Modbus RTU Interface. A subset of the most common settings is available via DIP switches.
The measuring value can be read over the Modbus RTU (RS485) interface.
The 2-way isolation guarantees reliable decoupling of the sensor circuit from the processing circuit and the auxiliary power circuit. Auxiliary power and Modbus RTU can be connected via the connection terminals or via the In-Rail-Bus connector (see accessories).
Product line
| Device Type | Order No. |
|---|---|
| Modbus Standard Signal AI Module, In-Rail-Bus for power supply and Modbus connection |
DMB 96100 B |
Technical Data
Input
| Voltage | Current | |
| Input signal | 0 to 10 V 2 to 10 V 0 to 5 V 1 to 5 V |
0 to 20 mA 4 to 20 mA |
| Input resistance | ≥ 100 kOhm | ≤ 25 Ohm |
| Overload | ≤ 30 V | ≤ 50 mA |
| Transmitter supply | 16 V (open circuit/short circuit < 22 V/35 mA) | |
Modbus
| Protocol | Modbus RTU (RS485) |
| Module addressing | 1 to 247 |
| Response delay | 1 to 1000 ms |
| Baud rate | 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 |
| Configuration | Parity: Even, Odd, None with 2 stop bits, None with 1 stop bit |
| Connectivity | Up to 247 DRAGO Modbus devices without additional repeater (1/8 Load) |
| Indication | Yellow LED on front panel |
| Measuring range | 0 to 115 % |
General Data
| Measuring error | < 0.1 % full scale |
| Temperature coefficient1) | < 100 ppm/K |
| Sampling rate | up to 100/s (a moving average filter with a width of 10 samples is applied internal) |
| Test voltage | 3 kV AC, 50 Hz, 1 min., Input against Modbus/power supply |
| Working voltage2) (Basic insulation) |
600 V AC/DC for overvoltage category II and pollution degree 2 acc. to EN 61010-1 |
| Protection against dangerous body currents2) |
Protective Separation by reinforced insulation acc. to DIN EN 61010-1 up to 300 V AC/DC for overvoltage category II and contamination class 2 between input and Modbus/power supply |
| Ambient temperature | Operation: -25 °C to +70 °C Transport and storage: -40 °C to +85 °C |
| Power supply | 24 V DC, Voltage range 16.8 V to 31.2 V DC, max. 1.3 W |
| EMC3) | EN 61326-1 |
| Construction | 6.2 mm (0.244″) housing, protection type: IP 20, mounting on 35 mm DIN rail acc. to EN 60715 |
| Connection (captive plus-minus clamp screws) |
Solid: 0.5 mm² – 4 mm² / AWG 20-12 Fine-stranded: 0.5 mm² – 2.5 mm² / AWG 20-14 Stripped length: 6-8 mm / 0.28 in Screw terminal torque 0.8 Nm / 7 lbf in |
| Weight | Approx. 70 g |
- Average TC related to full scale value in specified operating temperature range, reference temperature 23 °C
- As far as relevant the standards and rules mentioned above are considered by development and production of our devices. In addition relevant assembly rules are to be considered by installation of our devices in other equipment. For applications with high working voltages, take measures to prevent accidental contact and make sure that there is sufficient distance or insulation between adjacent situated devices.
- Minor deviations possible during interference
Block diagram
Dimensions
Terminal assignments
- 1 +Transmitter Supply Tx
- 2 +Input U
- 3 +Input I
- 4 −Input GND
- 5 +Modbus A (connected to In-Rail-Bus A)
- 6 −Modbus B (connected to In-Rail-Bus B)
- 7 +Power supply 24 V DC
(connected to In-Rail-Bus D) - 8 −Power supply 24 V DC
(connected to In-Rail-Bus C)