HEIDENHAIN VT 121 Operating Instructions Manual page 5

D
M12
VT 121 12 pin Connecting cable
A-coded
U P 5 white (WH)
Ext– 6 violet (VT)
0 V 12 white/green (WHGN)
Ext+ 9 yellow (YE)
Input voltage range: 19.2 V DC ... 28.8 V DC
Typical input current at 24 V DC: 8.5 mA
HEIDENHAIN | VT 121 | Operating Instructions | 03/2022
Power supply
VT 121 camera/UTI 491
– typically +24 V DC
– Limited Power Source (LPS)
– PELV system
A1+
UTI 491
A2–
Input
Power supply
11/13+
14
Output
Output voltage range: 3 V DC ... 33 V DC
Limiting continous current: 3 A (see derating curve)
Maximum inrush current: 15 A (10 ms)
3
2
1
0
10 20 30 40
Ambient temperature in °C
valve
50 60
5