Grundfos CIU 501 Instructions

English (GB)
21
00203 ControlMode
Indicates the actual control mode.
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
10: Constant level
128: AUTO
ADAPT
129: FLOW
ADAPT
130: Closed-loop sensor.
00204 OperationMode
Indicates the actual operating mode.
0: Auto-control (setpoint control according to selected control mode)
4: OpenLoopMin (running at minimum speed)
6: OpenLoopMax (running at maximum speed).
00205 AlarmCode The Grundfos-specific alarm code. See section 16. Grundfos alarm and warning codes.
00206 WarningCode The Grundfos-specific warning code. See section 16. Grundfos alarm and warning codes.
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 RESERVED -
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.
Address Register name Description

Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English