Hardware reference guide

I/O Modules
35013379 02 October 2007 551
Voltmeter
Monitor
Specifications
The following table shows the voltmeter monitor specifications.
Update Time 3 ms for all channels (simultaneous update)
Settling Time 900 μs to +/- 0.1% of the final value
Fault Detection Open circuit in 4 ... 20 mA mode. Specific channel is
identified when an open circuit is detected through the
red channel LED.
Bus Current Required 480 mA
Power Dissipation 5.3 W max
External Power Supply See Loop Voltage in this table.
Fusing
Internal None
Specifications
Possible injury to personnel or equipment.
Before removing the connector, ensure that it is safe to have field wiring in an open
circuit condition.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
WARNING
Voltmeter Monitor Specifications
Range 1 ... 5 V (Main current loop must be active)
Scaling
(Volts) = (mA) x 0.25
Output Impedance 300Ω Typical
Wire Length 1 m max
V
OUT
I
LOOP
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com