Val Controls IHP24-B - 4-20 Ma Input - AI1; Terminals; Electrical Specifications

DHW-UM-001
Val Controls A/S • Sallingsundvej 5 • DK-6715 Esbjerg N • Tel. +45 7547 0600
vc@valcontrols.com • www.valcontrols.com
Revision: 6
7/12
3.3 4-20mA input – AI1
The analogue inputs can be used to connect passive 4-20mA sensors to the device or in the
alternative configuration active 4-20mA sensors.
AI
Passive loop Active loop
+
-
-
AI
+
+ - + -
3.3.1 Terminals
Passive sensor
Active sensor
AI1
11 (+)
12 (-)
12 (+)
6 (-)
3.3.2 Electrical specifications
AI – Analogue input
External loop max Rload
820 Ohm at 20mA and 16.4VDC
Operating area
4 – 20mA
Minimum span
12mA
Cable length
1000 meters
Linearity
< 0.1%
Temperature coefficient
0.01% / 1°C (Warm-up: 10 min)
Rin
< 100 Ohm