Page 17
© Copyright 2021 ABB. All rights reserved.
Each load bus is equipped with a shunt: 1500 A for G7 and G8, 1600 A for G101 and G102. The VIM1C
monitors these shunts to determine actual currents and the remaining capacity of each load bus.
VIM1C features include fuse/breaker alarms, power loss alarms, individually configurable overload
thresholds, individually configurable power loss, audible, and remote form-C output alarms. The
VIM1 receives redundant power from the A and B panels and external ABS.
Voltage and Current - VIM1C displays voltage, current, and identifies each monitored load bus
3
.
Alarm Indication - When an alarm occurs, the backlight on the display changes color from green
(normal) to red (alarm active) and the front panel text also changes from “No Alarms” to “Alarms.”
Menus and Keys – Menus are structured with three main menu items: System Parameters, Load
Parameters, and Control/Operations - . Each key menu item has sub items as shown in the menu
map below. Left and Right keys are used to navigate the menu. Up and Down keys are used to
adjust the parameters. The VIM1C includes an audible alarm with a user configurable on/off
feature.
Alarm Connections and ABS Power
At the top of the cabinet is a Customer Interface Board for connecting Output Alarms and Alarm
Battery Supply (ABS) to redundantly power the alarms and the VIM1C meter.
The VIM1C receives redundant power from panels 1 and 2 as well as an external ABS connection, so
the ABS connection is not mandatory for proper operation but some customers require its use.
A Return connection is required for operation of the meter and alarms. The Return connection on
the Customer Interface Board is factory wired when internal return buses are ordered, otherwise it
must be field wired to the external return bus.
• Contacts are rated for 60V, 1/2A.
To Next Page
Loading...
