MU-3222B/3225B/3226B, MU-3251B/3253B
The MU-322xB/325xB modules are designed for monitoring the state of digital signals (switches, etc.) and "on/off" control of technological systems, especially for applications with higher signal concentration. Additionally, the digital inputs of MU-3225B and MU-3226B are equipped with counters.
The whole digital input group (MU-322xB) or digital output group (MU-325xB) is isolated from other circuits of module (power supply and RS-485 interface), but DIO channels are not isolated from each other.
The modules are equipped (in addition to two standard LEDs for power supply and RS-485 line activity) with 32 LEDīs indicating the status of the DIO channels.
Specifications
| Type | MU-3222B | MU-3225B | MU-3226B |
|---|---|---|---|
| Number of digital inputs | 32 | ||
| Type of digital inputs | group isolated bipolar 24V |
group isolated bipolar 24V with 50Hz filter |
|
| Digital input signal (level L) |
<3VDC (both polarities) | <3VDC (both polarities) <3VRMS (signal 50Hz) |
|
| Digital input signal (level H) |
10÷35VDC (both polarities) | 10÷35VDC (both polarities) 15÷35VRMS (signal 50Hz) |
|
| Overvoltage protection | ±75VDC (max. 1s) 75VRMS (signal 50Hz, max. 1s) |
||
| Digital input impedance | 20kΩ approx. | ||
| Digital input isolation | 1kVDC (DIN block against other circuits) | ||
| Number of counters | - - - | 32 | |
| Counter frequency | - - - | 200Hz max. (asymmetry 40/60% max.) |
10Hz max. (asymmetry 40/60% max.) |
| Counter range | - - - | 0÷4294967295 (i.e. 32-bit counter) | |
| Communication interface | RS-485 | ||
| Communication protocol | Modbus RTU & AIBus-2 (software selectable) | ||
| Supply voltage | 10÷30VDC | ||
| Power consumption | 2.0W max. | ||
| Housing & Dimensions | DIN35 housing, 172x92x51 mm | ||
| Signal terminals | screw terminals, wire 2.5mm2 max. | ||
| Type | MU-3251B | MU-3253B | |
|---|---|---|---|
| Number of digital outputs | 32 | ||
| Type of digital outputs | group isolated 24V (NPN type) |
group isolated 24V (PNP type) |
|
| Digital output signal | 32VDC/0.3A max. (2A max. 0.2s) (overcurrent protection by PTC resettable fuses) |
||
| Digital output isolation | 1kVDC (DOUT block against other circuits) | ||
| Communication interface | RS-485 | ||
| Communication protocol | Modbus RTU & AIBus-2 (software selectable) | ||
| Supply voltage | 10÷30VDC | ||
| Power consumption | 2.0W max. | ||
| Housing & Dimensions | DIN35 housing, 172x92x51 mm | ||
| Signal terminals | screw terminals, wire 2.5mm2 max. | ||
