Emergency Run; Digital Inputs - Grundfos Control MPC Installation And Operating Instructions Manual

Setting range
• Pump speed
• number of pumps
• filling pressure
• maximum filling time
• warning or alarm + stop
• ramp time for the pressure build-up phase.
Setting via control panel
• Settings > Secondary functions > Stop function >
Soft pressure build-up.
1. Select and set:
• Speed
• Number of pumps
• Filling pressure
• Max. time.
2. Select: Warning / Alarm + stop.
3. Set: Ramp time.
4. Select: Enabled.
Factory setting
The function is disabled.

8.7.25 Emergency run (4.3.5)

Fig. 71 Emergency run
Description
This function is used in booster applications. When this function
has been enabled, the pumps will keep running regardless of
warnings or alarms. The pumps will run according to a setpoint
set specifically for this function.
In case of sensor fault, both main and standby
Caution
pumps will run at 100 % speed!
Setting range
• Setting of digital input

(8.7.26 Digital inputs

• Setting of digital output (8.7.31 Digital outputs
• Setting of setpoint for emergency run.
Setting via control panel
• Settings > Secondary functions > Stop function > Emergency
run > Go to setting of digital input.
1. Select digital input.
2. Select: Emergency run.
3. x 2.
4. Select: Go to setting of digital output.
5. Select digital output.
6. Select: Emergency run.
7. x 2.
8. Set: Setpoint, emergency run.
When this function has been set as described above,
it can also be enabled via display System operating
Note
mode (2.1.1).
40
8.7.26 Digital inputs (4.3.7)
Fig. 72 Digital inputs
Description
It is possible to set the digital inputs of the CU 352. Each input,
except DI1, can be activated and related to a certain function.
As standard, the system has three digital inputs. If the system
incorporates an IO 351B module (option), the number of digital
inputs is 12.
All digital inputs are shown so that their physical position in the
system can be identified.
Example
DI1 (IO 351-41), [10]:
DI1:
(IO 351-41):
[10]:
For further information on the connection of various digital inputs,
see the wiring diagram supplied with the control cabinet.
Setting range
Note
Setting via control panel
• Settings > Secondary functions > Stop function > Digital
inputs.
(4.3.7)).
(4.3.9)).
Digital input No 1
IO 351, GENIbus number 41
Terminal No 10
DI1 (CU 352) cannot be selected.