Grundfos CIU 501 User Manual

9.6 Pump status register block
Registers in this register block can be read by means of function codes 0x03 and/or 0x04. They are read-only.
Address Register name Description
00201
Bits 0: LowFlowStop
Indicates if the state of "Low Flow Stop" function is active or not active.
0: Pump is not in "Low Flow Stop" state
1: Pump is in "Low Flow Stop" state
Only available on MGE model H and later.
Bit 1: CopyToLocal
Indicates if the remote settings of setpoint, operating mode, control mode and on/off state will be
automatically copied to local settings.
0: Copying disabled
1: Copying enabled.
Only available on MAGNA3 and MGE model H and later.
Bit 2: MaxFlowLimitEnabled
Indicates if the MaxFlowLimit is enabled. Enable it with register 00101, bit 5.
Only available on MAGNA3 and MGE model H and later.
0: Disabled
1: Enabled.
Bit 3: ResetAlarmAck
Indicates if a ResetAlarm command was acknowledged by the device. This bit will be set when the CIU has
accepted a ResetAlarm command, and the programmer can clear the ResetAlarm bit. The ResetAlarmAck
bit will automatically be cleared to 0 by the CIU when the ResetAlarm bit is cleared by the master device,
and a new ResetAlarm command can be attempted by raising ResetAlarm bit again.
0: No acknowledgement
1: Command acknowledged.
This functionality is only used when AutoAcknowledgeEvents is disabled.
Bit 4: SetpointInfluence
Indicates if setpoint influence is active.
0: Not active
1: Active.
Only available on MAGNA3 and MGE model H and later.
Bit 5: AtMaxPower
Indicates if the E-pump is running at its power limit. Only available on MAGNA3 and MGE model H and
later.
0: Not running at power limit
1: Running at power limit.
Bit 6: Rotation
Indicates if the E-pump is rotating, that is running, or not.
0: No rotation
1: Rotation.
Bit 7: Direction
Indicates the current rotational direction of the E-pump as seen from the ventilator side.
0: Clockwise.
1: Counterclockwise.
Bit 8: AccessMode
Indicates if the E-pump is locally or remotely controlled.
0: Local (a local control source with higher priority controls the E-pump)
1: Remote (controlled by Modbus master).
Bit 9: OnOff
Indicates if the E-pump is on or off.
0: Off (stopped, the green LED on the E-pump flashes)
1: On (started, the green LED on the E-pump is on).
Started does not necessarily indicate rotation, for instance in case of low-flow stop.
Bit 10: Alarm
Indicates if there is an alarm or not.
0: No alarm
1: Alarm (red LED on the E-pump is on).
Bit 11: Warning
Indicates if there is a warning or not. The E-pump will continue running even if there is a warning.
0: No warning
1: Warning (red LED on the E-pump is on).
Bit 12: ForcedToLocal
State of the "Forced to local" control option
0: Not forced to local
1: Forced to local.
Only available on MAGNA3 and MGE model H and later.
Bit 13: AtMaxSpeed
Indicates if the E-pump is running at maximum speed.
0: No
1: Yes.
Bit 14: RESERVED -
Bit 15: AtMinSpeed
Indicates if the E-pump is running at minimum speed.
0: No
1: Yes.
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Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English