Control Mode; Factory Setting; Setting By Means Of Control Panel - Grundfos TPE Betriebshandbuch

6.2.1 Additional operating modes - TPED pumps
The TPED pumps offer the following additional operating modes:
• Alternating operation. Pump operation alternates every
24 hours. If the duty pump stops due to a fault, the other pump
will start.
• Standby operation. One pump is operating continuously.
In order to prevent seizing-up, the other pump is started
10 sec. every 24 hours. If the duty pump stops due to a fault,
the other pump will start.
Select the operating mode by means of the selector switch in the
terminal box. See figs 5, 9 and 15.
The selector switch enables changeover between the operating
modes "alternating operation" (left position) and "standby
operation" (right position).
The switches in the two terminal boxes must be set to the same
position. If the switches are positioned differently, the pump will
be in "standby operation".
Twin-head pumps can be set and operated in the same way as
single-head pumps. The duty pump uses its setpoint setting,
whether it is made by means of the control panel, via the R100 or
via bus.
Both pumps should be set to the same setpoint
and control mode. Different settings will result in
Note
different operation when changing between the
two pumps.
If the power supply to the pump is disconnected, the pump setting
will be stored.
The remote control R100 offers additional possibilities of setting
and status displays. See section

6.3 Control mode

The pump can be set to two control modes, i.e.
• controlled
• uncontrolled.
In control mode controlled, the pump will adjust its performance
to the desired setpoint for the control parameter (pressure,
differential pressure, temperature, differential temperature or
flow).
In control mode uncontrolled, the pump will operate according to
the constant curve set.
Controlled
H
H
set
Q
Fig. 24 Pump in control mode controlled (differential pressure
control) and in control mode uncontrolled
The pumps have been factory-set to control mode uncontrolled.
See section 6.4 Factory setting.
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8. Setting by means of R100.
Uncontrolled
H
Q

6.4 Factory setting

TPE, NKE, NKGE and NBE, NBGE pumps
The pumps have been factory-set to uncontrolled operation.
The setpoint value corresponds to 100 % of the maximum pump
performance (see data sheet for the pump).
In sections 8.1 Menu OPERATION
INSTALLATION, the factory-setting is marked with bold-faced
type under each individual display.
TPED pumps
The pumps have been factory-set to uncontrolled operation and
the additional operating mode "alternating operation".
The setpoint value corresponds to 100 % of the maximum pump
performance (see data sheet for the pump).
In sections 8.1 Menu OPERATION
INSTALLATION, the factory-setting is marked with bold-faced
type under each individual display.

7. Setting by means of control panel

Warning
At high system temperatures, the pump may be
so hot that only the buttons should be touched to
avoid burns.
The pump control panel, see fig.
following buttons and indicator lights:
• Buttons, and , for setpoint setting.
• Light fields, yellow, for indication of setpoint.
• Indicator lights, green (operation) and red (fault).
Light fields
Indicator lights
Fig. 25 Control panel, single-phase pumps
Light fields
Indicator
lights
Fig. 26 Control panel, three-phase pumps
and 8.3 Menu
and 8.3 Menu
25 or 26, incorporates the
Buttons
Buttons
19