Lenovo Neptune DWC RM100 - CONFIGURATION Screen; Fig.10 - Control System Configuration Screen

CDU Operating & Maintenance Guide Page 16
Neptune DWC RM100 in-rack Coolant Distribution Unit
2.2.8 CONFIGURATION Screen
The Configuration screen can be used to set specific parameters and control functions.
NOTICE! Parameter ID’s shown in ‘red’ text will only be accessible with the Engineer
log-in code.
Configuration - Filling
ID
Title
Description
Default
Range
Unit
P101
Fill Pressure
Start threshold for fill pump
0.8
0.3 to 1.0
Bar
P102
Fill Hysteresis
Stop hysteresis for fill pump
0.2
0.1 to 0.5
Bar
P103
Fill Pump Run Period
Time for level sensor to make, or fill pressure to
be satisfied, prior to alarm (when unit is on-line)
1
1 to 15
min
P104
Level Sensor Delay
Level Senor response time, prior to alarm
1
1 to 6
secs
P105
Fill Start Delay Period
Delay prior to pump start after initiate signal
10
1 to 60
secs
P106
Fill Warning Delay Period
Delay prior to ‘check make-up’ alarm activated
5
0 to 60
secs
P107
Manual Fill Control
Select Manual or Automatic Fill pump control
0 = Manual; 1 = Automatic
1
0 or 1
-
Configuration – Pump Control
ID
Title
Description
Default
Range
Unit
P201
Control Type
Select pump speed controlled by flow or DP
Flow
Flow or DP
-
P202
Flow Setpoint
Set the required Secondary flow rate
50
5 to 130
l/m
P203
Differential Pressure Setpoint
Set the required Secondary differential
pressure (DP)
0.3
0.1 to 4.0
Bar
P204
Low Flow %
Low flow alarm threshold (% of flow setpoint)
90
50 to 95
%
P205
Low DP Hys
Low DP alarm hysteresis
0.5
0.1 to 3
bar
P206
Low Flow/DP Delay
Time delay prior to low Flow/DP alarm
100
1 to 300
secs
P207
Minimum Pump Speed
Set minimum pump running speed
10
10 to 70
%
P211
Over-pressure Setpoint
Maximum system pressure, prior to alarm
6.0
2.0 to 7.0
Bar
P212
Over-pressure Action
Alarm only, or shutdown & alarm
Alarm
Alarm or
Alarm+S/D
-
P213
Start-up Speed
Initial pump start fixed speed (0 = Auto)
0
0 to 100
%
P214
Start-up Period
Initial start speed hold period, prior control
loop taking over
0
0 to 100
secs
P215
Loop Refresh Period
Scan period for pump speed control loop
10
1 to 120
secs
P216
Maximum Control Pressure
Maximum pump speed control loop pressure
4.0
1.0 to 8.0
Bar
P217
DP Setpoint – Max Cooling
Mode
DP Setpoint used when operating in Max
Cooling mode
2.5
1 to 5.0
Bar
P216
Cooling Fan Run On Period
The period of time the fan will run on for after
the unit is switched to standby
10
0 to 60
mins
Fig.10 – Control System Configuration screen