Remote Control Via Direct I/O (Hard-Wired; Control Scenario; Remote Monitoring; Communication Port Setup - Emerson Vilter MicroVission Operation And Service Manual
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- Retrofit manual (20 pages) ,
- Operation and service manual (262 pages)
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Appendix C • Remote Control and Monitoring
Remote Control via Direct I/O (Hard-wired)
Remote Control of the compressor can also be ac-
complished using hard-wired inputs. These include
Remote Start-Stop digital input, Remote Increase digi-
tal input and Remote Decrease digital input. For com-
munication register information, refer to Appendix B:
Communication Table.
Configuration Screen Setup
Refer to Figure C-1. Configuration Screen (Page 3).
For Direct I/O control:
•
Configure the "Active Remote Control" drop-down
box to "Direct I/O". This selection activates the
Remote Start-Stop digital input. This is the ONLY se-
lection that activates the Remote Start-Stop digital
input.
•
Below the "Active Remote Control" selection box,
check the "Direct I/O" box.
Now radio-buttons for selecting the desired control
method are available:
•
Auto Control
•
(Digital) Manual Control – Comp. Capacity con-
trolled via digital increase and decrease inputs.
Auto Control
The compressor is started and stopped from the Remote
Start/Stop input, but the compressor capacity is con-
trolled from the internal compressor control setpoints
entered in the MicroVission. The Auto-cycle setpoints
can be enabled or disabled as desired.
(Digital) Manual Control
The compressor started and stopped from the Remote
Start/Stop input, but the compressor capacity is con-
trolled from the Remote Increase and Remote Decrease
digital inputs.
C - 4
Control Scenario
Once the Configuration Screen has been configured for
the desired type of Digital I/O control, the MicroVission
needs to be placed in REMOTE mode. To do this, press
the green color START button on the main page, and
then the REMOTE button.
The Remote Start-Stop input is now active. The state of
the Remote Enable Output should be determined by the
controlling device. When it is determined to be ON, then
the controlling device can energize the Remote Start-
Stop input. After the compressor has started, then the
compressor capacity is controlled by the selected op-
tion. Thought should also be given as to how the com-
pressor will be restarted after a power failure occurs.
Remote Monitoring
It should be noted that while the compressor is being
controlled (starting, stopping and load control) via hard-
wired inputs, the monitoring of compressor operating
parameters can still occur by using the communication
ports available in the MicroVission. Remote monitor-
ing can be accomplished by utilizing either the Ethernet
communication port (via Ethernet IP or Modbus TCP/
IP) or the serial port (via RS485 Modbus RTU). For com-
munication register information, refer to Appendix B:
Communication Table.
Communication Port Setup
See Figure C-1. Configuration Screen (Page 3).
For Serial Port Modbus RTU Monitoring
•
•
For Ethernet Monitoring
•
•
•
Once the port is setup properly, communication can be
established. You will be able to read from and write to
registers. In Direct I/O mode, you cannot write to reg-
isters in the Control Block region of Modbus registers
40170 through 40180.
MicroVission Controller • Operation and Service Manual • Emerson • 2017VM-16 1.0
Check the "Serial" box inside the "Communications"
section.
Configure serial port settings (baud rate, # data bits,
# stop bits, parity) and panel ID number (which is
"node" number for Modbus RTU.)
Check
the
"Ethernet"
"Communications" section.
Configure IP address and Subnet Mask.
Select Protocol (Ethernet IP or Modbus TCP/ IP)
box
inside
the
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