
AMMONIA User Manual
AMMONIA_User 9/09
7
2
IO: 4-20mA Output
Safety
30 VDC maximum on field wiring terminals.
24 VDC maximum on internal card surfaces.
Services
The IO driver provides one or two, DC isolated, loop powered 4-20mA outputs.
The current output level 0% to 100% is logged by the analyzer.
Card Installation
1. Turn OFF the controller AC power
2. IO driver
cards may be installed in the Sensors ‘E’ & ‘F’ slot.
3. Turn ON the controller after installing the IO Driver and the controller will auto-configure, displaying the
current output, on the LCD display and browser.
Current Loop Wiring
15 VDC
Controller DC Supply
- +
Loop Powered
Pump or Valve
15 to 22 VDC Supply
Thermally fused at 100
mA
+24V IN
Remote
Monitor
4-20mA Input
Proportional
Control
+24V IN
Distributed
Control System
4-20mA Input
1+ 1- 2+ 2-
Part: IO
Single 4-20mA
Output
1+ 1- 2+ 2-
Part: IO
Dual 4-20mA
Output