Configuration Screen; Fig.10 - Control System Configuration Screen - Lenovo Neptune DWC RM100 Operation & Maintenance Manual

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