Page 50 VRC2000 Installation and Operations Manual
Technical or Setup Assistance
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You enter
☎ “#”
The VRC2000 will respond with a double [BEEP].
The VRC2000 will now declare an alarm condition when metering channel
1’s second high tolerance limit is met. Entering “#” enables the alarm; “*”
disables the alarm.
Now program metering channels with your own information. Use the
planning worksheets (See Appendix H: Setup Worksheets, Page 117.) to plan
the exact codes to be programmed. Planning will make this process much
faster and easier. These worksheets also function as a permanent written
record of metering-channel programming.
Setting Up Command Channels
The VRC2000 has 16 command channels which can turn equipment on or
off, raise/lower power or voltage settings on site equipment, or anything else
controllable through the open collector output switches on the VRC2000’s
rear panel.
If open collectors are not adequate for site-control needs, use the Command
Relay Unit (See Appendix C: Accessories, Page 100.), which converts the
open collector outputs of up to eight command channels to relay contact
closures. Each relay in the Command Relay Unit is rated for up to 5A, at up
to 240V.
Any status or metering channel can be programmed to automatically activate
a particular command-channel switch. Commands can also be issued directly
to any command channel via DTMF telephone.
Each command channel has two switch outputs, labeled A and B. The switch
outputs are open collectors, which can be programmed either as momentary
or latching.
In the latching configuration, when switch A is activated, switch B will
always be deactivated, and vice versa. In other words, either switch B or
contact A will always be activate. Latching command-channel switches are
often used as toggle switches for certain types of site equipment.
Momentary switches may be set up to activate for periods of time ranging
from one-eighth of a second to 31.875 seconds. The default setting for all
open collectors is momentary, with one-half second duration. Switches A
and B cannot be ON at the same time.
For command-channel electrical specifications, see Specifications (Page 91).
Programming command channels is similar programming status and
metering channels; however, take time to read this section and experiment
with setting up several command channels before deciding on final
programming.
First, access a command channel’s set-up information. The VRC2000 will
list the available functions for the command channel. For each parameter,
VRC2000 Setup
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