Woodward
Manual MRM3-2 GB
10
TD_MRM3-2_09.08_GB_Rev.New
3.1.3 Digital Inputs
The MRM3-2 has 7 digital inputs with fixed functions. All inputs have a common reference point :
Terminal D8. (See Chapter 3.1)
No Terminal
Function
Coding
Plug
1 C8
External
reset
2
2 E8
External
blocking
1
3
A2
Parameter set change-over switch
3
4
A5
External trigger for the fault recorder
4
5
A6
Identification „Motor Running“
7
6
A7
Ext. trigger, undelayed
6
7
A8
Ext. trigger, delayed
5
3.1.4 Low/High Range of the Digital Inputs
The MRM3-2 is equipped with a wide-range power supply unit and hence the supply voltage is
freely selectable. The switching threshold of the digital inputs, however, has to be fixed in com-
pliance with the supply voltage. Two different switching thresholds can be adjusted:
Range Plug
U
not active
U
active
Low
Plugged in
<= 8V
>= 10V
High
Open
<= 60V
>= 80V
Figure 3.4: Coding Plug
