Page: 12 - Installation Manual
NV-300T/301T Man: 9910 Soft: 2.xx
2.
CONNECTIONS
2.1
CONNECTION OF THE FEEDBACK SYSTEMS
The feedback systems (scales or encoders) are connected via SUB-D HD type
15-pin female connectors: X3, X4 and X5.
Characteristics of feedback inputs: X3, X4 and X5:
-
+5V input consumption: 250 mA
-
Admits square-wave signal (TTL). (A, B, Io)
-
1Vpp voltage modulated sinewave signals (NV-301T model)
-
Maximum frequency: 250 KHz, minimum separation between flanks:
950nsec.
-
Phase shift 90º ±20º, hysteresis 0.25 V, Vmax 7V.
Maximum input current: 3 mA.
-
High threshold (logic state 1) 2.4V < V
IH
< 5V
-
Low threshold (logic state 0) 0.0V < V
IL
< 0.8V
*
Not available at the NV-300T model
Pin
Signal
Function
1
A
Feedback signals
2
/A*
3
B
4
/B*
5
I0
Reference signal
6
/Io*
7
Alarm
Feedback alarm
8
/Alarm*
9
+5V
Power to feedback device
10
Not connected
Unused
11
0V
Power to feedback device
12
Not connected
Unused
13
Not connected
Unused
14
Not connected
Unused
15
Chassis
Shield
15
1
12
6