Grundfos CIU 501 User Manual

Address Register name Description
00202 ProcessFeedback
Indicates the actual process feedback from the E-pump.
The scale is 0.01 %, so the valid value range is from 0 to 10000.
This value can be compared with the setpoint value.
Closed loop:
Percentage of closed-loop feedback sensor range.
Open loop
Percentage of E-pump performance.
Common examples
4700: 47 %
8000: 80 %.
00203 ControlMode
Indicates the actual control mode. Not all modes are supported by all E-pump types.
0: Constant speed
1: Constant frequency
3: Constant head
4: Constant pressure
5: Constant differential pressure
6: Proportional pressure
7: Constant flow
8: Constant temperature
9: Constant differential temperature
10: Constant level
128: AUTOADAPT
129: FLOWADAPT
130: Closed-loop sensor.
131: AUTOADAPTCP
00204 OperationMode
Indicates the actual operating mode.
0: Auto-control (Normal, setpoint control according to selected control mode)
4: OpenLoopMin (running at minimum speed)
6: OpenLoopMax (running at maximum speed).
7: Hand mode
00205 AlarmCode The Grundfos-specific alarm code.
00206 WarningCode The Grundfos-specific warning code.
00207
Bits 0-7: MonthsToBearingService
Indicates the number of months until the next bearing service (not available on all E-pumps).
This value can be 0, 1, 3, 6, 12 and 24 months, if available. A value of 24 months means "24 months or
more". A value of 0xFF indicates that the information is not available.
Bit 8: BearingServiceType
Indicates the type of the next bearing service (not available on all E-pumps).
0: Lubricate bearings
1: Change bearings.
Bits 9-15: RESERVED -
00208 DriveState
Dynamic drive state variable:
0: Stopped
1: Accelerating
2: Decelerating
3: Steady state/closed loop
4: -
5: Accelerating halt
6: Decelerating halt
7: Start on the run (flying cut-in)
Only MGE motors and CUE drives.
00209 FeedbackSensorUnit
Indicates the unit of the feedback sensor.
0: bar
1: mbar
2: m
3: kPa
4: psi
5: ft
6: m
3
/h
7: m3/s
8: l/s
9: gpm
10: °C
11: °F
12: %
13: K
14: W.
00210 FeedbackSensorMin Minimum value of the feedback sensor. Unit of the sensor minimum is defined by register 00209.
00211 FeedbackSensorMax Maximum value of the feedback sensor. Unit of the sensor maximum is defined by register 00209.
00212 NomFrequency
Nominal pump frequency. The scale is 0.1 Hz.
Only available on MAGNA3 and MGE model H and later.
23
English (GB)

Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English