M&M RWB series User Manual

Standard Screw Compressor - RWB Series
3-54
M&M R
EFRIGERATION
I
NC
.
The following table lists the data entry fields and a description of their purposes.
Process Temperature Control Setpoints Definitions
Economizer Control Setpoints (Option)
The Economizer Control screen is only visible when the Economizer Control option is
enabled.
Economizer Control Status Screen
PARAMETER DEFINITION RANGE
NORMAL
BANDWIDTH
Adjusts the sensitivity of the time proportional control routine. 0 - 20 DEG
CONTROL
DEADBAND
The slide valve will not be adjusted if the Process Temperature is
within the control deadband.
0 - 20 DEG
LONG PULSE The longest load or unload pulse used to move the slide valve. 0.1 - 60 SEC
SHORT PULSE The shortest load or unload pulse used to move the slide valve. 0.1 - 60 SEC
UPDATE TIME
The time interval the CCS will wait before it re-calculates the slide
valve move time.
0.1 - 60 SEC
SETPOINT The current control setpoint group and value (reference). N/A
PROCESS TEMP The current Process Temperature value (reference). N/A
SV
POSITION
The current slide valve position (reference). N/A
SV MOVE TIME
The amount of time the load or unload solenoid will be actuated
for the current system parameters (reference).
N/A
SCREW MODE The current compressor mode (reference). N/A
SCREW STATE The current compressor state (reference). N/A
M & M REFRIGERATION 8:32
AM
1. START ECONOMIZER CONTROL
2. STATS
3. MODE CONTROL MODE MAN OFF
4. SETPT
5. SCHED CUT-IN SETPT XXX.X
PCT
6. CNTRL CUT-OUT SETPT XXX.X
PCT
7. MISC
8. LOGS
9. MENUS

M&M RWB series Specifications

General

Brand	M&M
Model	RWB series
Category	Controller
Language	English