Grundfos CONTROL MPC User Manual

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11.5.4 Setpoints (2.1.3)
Fig. 25 Setpoints
Description
In addition to the primary setpoint 1 (shown in the display 2 in the
Operation menu), six alternative setpoints can be set for closed-
loop control. It is furthermore possible to set seven setpoints for
open-loop control.
As described in sections 11.7.3 Alternative setpoints (4.1.2) and
11.7.4 Alternative setpoints 2 to 7 (4.1.2.1 to 4.1.2.7), it is
possible to activate one of the alternative setpoints by means of
external contacts.
Setting range
The setting range of setpoints for closed-loop control depends on
the range of the primary sensor. See section 11.7.7 Primary
sensor (4.1.4).
In open loop control, the setting range is 0-100 %.
Setting via control panel
1. Mark the Operation menu with .
2. Mark Further settings with or , and press .
3. Mark Setpoints with or , and press .
4. Select the setpoint with or .
5. Set the setpoint with or , and press .
Factory setting
Setpoint 1 for closed-loop control is a value suitable for the
Control MPC in question.
The alternative setpoints for closed-loop control are 3 bar.
All setpoints for open-loop control are 70 %.
11.5.5 Individual pump control (2.1.4)
Fig. 26 Individual pump control
Description
It is possible to change the operating mode from automatic
operation to one of the manual operating modes.
Auto
The pumps are controlled by the PI controller, ensuring that the
system delivers the required performance.
Manual
The pump is not controlled by the PI controller, but set to one of
the following manual operating modes:
• Max.
The pump runs at a set maximum speed. (This operating
mode can only be selected for variable-speed pumps.)
• Normal
The pump runs at a set speed.
• Min.
The pump runs at a set minimum speed. (This operating mode
can only be selected for variable-speed pumps.)
• Stop
The pump has been forced to stop.
Pumps in manual operation are not part of the normal pump
cascade and speed control. The manual pumps are a
"disturbance" of the normal operation of Control MPC.
If one or more pumps are in manual operation, the system may
not be able to deliver the set performance.
There are two displays for the function. In the first display, the
pump to be set is selected, and in the next display, the operating
mode is selected.
Setting range
All pumps can be selected.
Setting via control panel
1. Mark the Operation menu with .
2. Mark Further settings with or , and press .
3. Mark Individual pump control with or , and press
.
4. Select the pump with or , and press .
TM03 8952 4807 TM03 8953 4807

Grundfos CONTROL MPC Specifications

General

Brand	Grundfos
Model	CONTROL MPC
Category	Control Systems
Language	English