Grundfos CIU 501 Instructions

English (GB)
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00102 ControlMode
Sets the control mode enumeration.
Some modes are not supported by all E-pumps.
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
(set FLOW
LIMIT
in register 00106)
130: Closed-loop sensor.
See section 10.1 Control mode.
00103 OperationMode
A state enumeration to control the E-pump operating mode.
0: Auto-control (setpoint control according to selected control mode)
4: OpenLoopMin (running at minimum speed)
6: OpenLoopMax (running at maximum speed).
Note: "OnOffReq" has higher priority than "OperationMode", meaning that "OnOffReq"
must be set to On for "OperationMode" to have any effect.
00104 Setpoint
Sets the E-pump setpoint.
The scale is 0.01 %, so the value must be from 0 to 10000 to represent the entire 0-100 %
range.
Closed loop
Percentage of closed-loop feedback sensor range.
Open loop
Percentage of total system performance.
Common examples
4700: 47 %
8000: 80 %.
See section 10.2 Setpoint.
00105
RelayControl A register to control the relays. Is bitwise interpreted as follows:
Bit 0: Relay1Control
Controls the state of relay 1.
0: Closed
1: Open.
Bit 1: Relay2Control
Controls the state of relay 2.
0: Closed
1: Open.
Bits 2-15: RESERVED -
00106 SetMaxFlowLimit
Sets the maximum flow limit, FLOW
LIMIT
(must be enabled in register 00101, bit 5).
The value is set in 0.01 m
3
/h. If enabled, the FLOW
LIMIT
is active in all control modes.
If disabled, it will only be active in FLOW
ADAPT
control mode. Only available on MAGNA3
and MGE model H.
00107 SetPumpUNIX_RTC_HI
Sets the real-time clock in the pump in unix format (seconds since 01-01-1970).
Only available on MAGNA3 and MGE model H.
00108 SetPumpUNIX_RTC_LO
Address Register name Description

Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English