DESIGNER’S HANDBOOK 4189350049C EN
Page 79 of 206
5.7
DX1 digital extension module
The digital extension module has two galvanic separated digital inputs and two general-purpose relay outputs.
The digital inputs are primarily intended for use as direct RPM pickup input(s), but may be configured differently.
5.7.1
DX1 input circuit - principle diagram
The two digital inputs are identical, and the principle diagram below illustrates the main function.
The input circuit is protected for over- and reverse-voltage.
The threshold (or trigger) level is set up in the relevant setup profile (it cannot be changed from menu).
The setup will be one of 4 fixed levels, intended for input signals of respectively 5 V, 12 V, 24 V or 30 V.
The input voltage level must not /-32 V DC.
Please see the XDi data sheet for specific technical data.
5.7.2
Connecting to the DX1 module
DX1 Digital extension module connector
Pin no.
Marking
Function
1
OUT2 COM
Relay 2 contact, common
2
OUT2 N.C.
Relay 2 contact, normally closed
3
OUT2 N.O.
Relay 2 contact, normally open
4
OUT1 COM
Relay 1 contact, common
5
OUT1 N.C.
Relay 1 contact, normally closed
6
OUT1 N.O.
Relay 1 contact, normally open
7
IN2 LOW
Digital input 2, negative (-)
8
IN2 HIGH
Digital input 2, positive (+)
9
NOT CONN.
The terminal is not connected internally.
10
IN1 LOW
Digital input 1, negative (-)
11
IN1 HIGH
Digital input 2, positive (+)
