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MU-3222A/3225A/3226A, MU-3251A/3253A

The MU-322xA/325xA 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-3225A and MU-3225A are equipped with counters.

The whole digital input group (MU-322xA) or digital output group (MU-325xA) 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.

Three-way isolation and wider range of supply voltage as an option

Modules in standard version offer group isolation of DIO block from other circuits of module (power supply and RS-485 interface) and industrial range of supply voltage (10÷30VDC).

In applications where is necessary RS-485 line isolated from the power supply (and DIO signals of course), a modified version with three-way isolation and wider range of supply voltage (5÷70VDC in three steps) is available.

Specifications

Type MU-3222A MU-3225A MU-3226A
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 ±70VDC (max. 1s)
70VRMS (signal 50Hz, max. 1s)
Digital input impedance 20kΩ approx.
Digital input isolation 1kVDC (DIN block against other circuits)
(three-way isolation as an option)
Number of counters - - - 8
Counter frequency - - - 200Hz max.
(asymmetry
40/60% max.)
10Hz max.
(asymmetry
40/60% max.)
Counter range - - - 0÷4294967295 (i.e. 32-bit counter)
Supply voltage 10÷30VDC (5÷70VDC in three steps as an option)
Power consumption 2.5W max.
Housing & Dimensions DIN35 housing, 192x80x50 mm
Signal terminals screw terminals, wire 2.5mm2 max.

 

Type MU-3251A MU-3253A
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)
(three-way isolation as an option)
Supply voltage 10÷30VDC (5÷70VDC in three steps as an option)
Power consumption 3.2W max.
Housing & Dimensions DIN35 housing, 192x80x50 mm
Signal terminals screw terminals, wire 2.5mm2 max.