QUANTUM™ HD COMPRESSOR CONTROL PANEL
COMMUNICATIONS SETUP
090.040-CS (JAN 14)
Page 95
GENERAL NOTES:
Command Values need tenths field added. For example, to start the
compressor, the table above states that 1 = Start. However, being
that one decimal place is assumed, a value of 10 actually needs to
be sent.
SPECIFIC NOTES:
Note 1: The compressor must be in remote communications to
accept the start and stop commands that are sent through serial
communications, and the Capacity Mode must be in remote com-
munications to accept load and unload commands that are sent.
Note 2: To read the proper Temperature/Pressure units, use Frick
®
address 4566. To change (write to) the Temperature/Pressure units,
use Frick
®
address 8920.
Note 3: Mode must already be enabled.
Note 4: The value passed with this command is the position (per-
centage) to which the control will attempt to set the Slide Valve.
The control will automatically load and/or unload the Slide Valve
until it is within a deadband (+/- 0.5%) of the target.
Conditions:
• the compressor must be running
• the Capacity Mode must be Remote Comms
• if the compressor is Variable Speed, the Slide Valve will
not go below the Variable Speed Minimum Slide Valve
COMMANDS:
Frick®
Address
AB
Address
Modbus
Address
Read/
Write
Description of Data Value Codes
8910 N119:10 48911 W Remote – Start 1 = Start
See Note 1
8911 N119:11 48912 W Remote – Stop 1 = Stop
8912 N119:12 48913 W Remote - Load Slide Valve
0 = Turn off
1 – 15 = Load x seconds
8913 N119:13 48914 W Remote - Unload Slide Valve
0 = Turn off
1 – 15 = Unload x seconds
8914 N119:14 48915 W Remote - RDB Capacity 25, 50, 75, 100 (represents capacity %)
8915 N119:15 48916 W Remote - Compressor Mode
0 = Manual
1 = Auto
2 = Remote -- Communications
3 = Remote -- I/O
5 = Remote -- Sequencing
6 = Manual -- Browser
8916 N119:16 48917 W Remote - Capacity Mode
1 = Auto
2 = Remote -- Communications
3 = Remote -- I/O
4 = Remote -- 4-20ma
5 = Remote – Sequencing
6 = Manual -- Browser
8917 N119:17 48918 W Remote - Clear Alarms 1 = Clear Alarms
8918 N119:18 48919 W Remote - Clear Recycle Delay 1 = Clear Recycle Delay
8919 N119:19 48920 W Remote - Sequencing Mode
0 = Disable
1 = Enable
8920 N119:20 48921 W Remote - Communication Units
0 = C ° / PSIA
1 = Panel Units
See Note 2
8921 N119:21 48922 W Remote - Regulation Mode
0 = Regulation Mode 1
1 = Regulation Mode 2
2 = Regulation Mode 3
3 = Regulation Mode 4
See Note 3
8922 N119:22 48923 W Remote – Set Slide Valve Position 0 – 100% See Note 4
8923 N119:23 48924 W Remote – Set Drive Speed 0 – 100% See Note 5
8924 N119:24 48925 W Remote – Set Total Capacity 0 - 200 See Note 6
setpoint
This command is reset by a Remote Load or Remote Unload com-
mand. Writing to this value too often will cause the Slide Valve to
load and unload excessively. Only write to this value when the Slide
Valve needs to move from its current position. Typically this should
not be more than once every 30 seconds.
Note 5: The value passed with this command is the speed (percent-
age) to which the control will attempt to set the Drive.
Conditions:
• the compressor must be Variable Speed
• the compressor must be running
• the Capacity Mode must be Remote Comms
• the Drive will not go below the Drive Speed Minimum
setpoint
This command is reset by a Remote Load or Remote Unload com-
mand
Note 6: This command is actually a combination the previous two
(Remote – Set Slide Valve Position and Remote – Set Drive Speed),
and is for the convenience of the PLC programmer. A value of X
from 0 to 100 will set the Slide Valve Position to X% and the Drive
Speed to 0% (or the allowable minimum). A value of X from 100 to
200 will set the Slide Valve to 100% and the Drive Speed to (X –
100)%. See notes 4 and 5 for additional requirements.
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