OPERATING INSTRUCTIONS
57
SL, SM & SH 90, 110, 132, 150, 200, 250 &300 (50Hz)
L, H & HH 125, 150, 200, 250, 300, 350 & 400 (60Hz)
[ ] denotes alternative units for reference.
–OPERATOR SETPOINTS–
#
6,90
bar
[100]
[psi]
OFFLINE PRESSURE
7,2 bar [103 psi]
READY TO START
ONLINE PRESSURE
6,5 bar [94 psi]
STATUS
MAIN MENU
SELECT
OPERATOR SETPOINTS
Setpoints are user–adjustable variables in the controller logic that
can be set using the OPERATOR SETPOINTS screen.
The name and value of each of the setpoints listed below can be
seen on the screen by moving the list up and down using the arrow
buttons.
FOR METRIC UNITS
OPERATOR
RANGE
STEP UNIT
SETPOINTS
Lead/Lag*
Lead/Lag
Lead Offline
4,1 to
0,1
barg
Pressure
RATED +0,2
Lead Online
3,5 to
0,1
barg
Pressure
OFFLINE – 0,7
Lag offset
0 to 3,0
0,1
barg
Load Delay Time
0 to 60
1
SEC
Condensate interval 60 to 360
1
SEC
Condensate
2 to 20
1
SEC
discharge time
Star–Delta Time**
10 to 20
1
SEC
Max. First stage
149 to ***
1
°
C
temperature
Max. Second stage Max.–56 to ***
1
°
C
temperature
(Screen) Contrast
0 to 10
1
–––
*The lead/lag option allows a customer to choose one compressor as
the “lead” compressor and any others as the “lag” compressor
(simulates the mode of a sequencer). The lag compressors on–line and
off–line pressures are determined by subtracting the lag offset
set–point from the on–line and the off–line pressure set points of the
lead compressor.
**Does not apply to automatic across the line starters.
***Max. first stage temperature:
226,7
°
C – for 7 and 8,5 barg rated units
237,8
°
C – for 10 barg rated units
Max. second stage temperature:
220
°
C – for 7 barg rated units
252,2
°
C – for 8,5 barg rated units
271,1
°
C – for 10 barg rated units
FOR IMPERIAL/US UNITS
OPERATOR
RANGE
STEP UNIT
SETPOINTS
Lead/Lag*
Lead/Lag
Lead Offline
60 to
1
psig
Pressure
RATED +3
Lead Online
50 to
1
psig
Pressure
OFFLINE – 10
Lag offset
0 to 45
1
psig
Load Delay Time
0 to 60
1
SEC
Condensate interval 60 to 360
1
SEC
Condensate
2 to 20
1
SEC
discharge time
Star–Delta Time**
10 to 20
1
SEC
Max. First stage
300 to ***
1
°
F
temperature
Max. Second stage Max.–100 to *** 1
°
F
temperature
(Screen) Contrast
0 to 10
1
–––
*The lead/lag option allows a customer to choose one compressor as
the “lead” compressor and any others as the “lag” compressor
(simulates the mode of a sequencer). The lag compressors on–line and
off–line pressures are determined by subtracting the lag offset
set–point from the on–line and the off–line pressure set points of the
lead compressor.
**Does not apply to automatic across the line starters.
***Max. first stage temperature:
440
°
F – for 100 and 125 psig rated units
460
°
F – for 150 psig rated units
Max. second stage temperature:
428
°
F – for 100 psig rated units
486
°
F – for 125 psig rated units
520
°
F – for 150 psig rated units
Setpoints associated with options are described in the OPTIONS
sections.
A setpoint’s value can be changed by first highlighting the item and
its value and pressing the SELECT button to highlight just the value.
When the value line is highlighted by itself, the value can be adjusted
using the up and down arrow buttons. The CANCEL and SET buttons
appear at this time. Press the SET button to enter the new value or
press the CANCEL button to return to the value of the setpoint prior to
using the arrows. The displayed value will flash twice to indicated that
it has been entered into the setpoint and the pair of setpoint items and
value display lines will again be highlighted together.
Operator set points can be exited by pressing the STATUS or MAIN
MENU buttons. If no buttons are pressed within 30 seconds, the display
will return to the CURRENT STATUS screen.
