Grundfos TPE3 - Analog Inputs; Automatic Night Setback; Flowlimit; Pt100;1000 Inputs

31
English (US)
15.5 FLOW
LIMIT
FLOW
LIMIT
• Enable FLOW
LIMIT
function.
•Set FLOW
LIMIT
.
Fig. 53 FLOW
LIMIT
The FLOW
LIMIT
function can be combined with the following
control modes:
• Prop. press.
• Con. diff. press.
• Con. diff. temp.
• Const. temp.
• Const. curve.
A flow-limiting function ensures that the flow never exceeds the
entered FLOW
LIMIT
value.
The setting range for FLOW
LIMIT
is 25 to 90 % of the Q
max
of the
pump.
The factory setting of the FLOW
LIMIT
is the flow where the
AUTO
ADAPT
factory setting meets the maximum curve.
See fig. 36.
15.6 Automatic Night Setback
Once you have enabled Automatic Night Setback , the pump
automatically changes between normal duty and night setback
(duty at low performance).
Changeover between normal duty and night setback depends on
the flow-pipe temperature.
The pump automatically changes over to night setback when the
built-in sensor registers a flow-pipe temperature drop of more
than 18 to 27 °F (10 to 15 °C) within approx. two hours.
The temperature drop must be at least 1.8 °F/min (0.1 °C/min).
Changeover to normal duty takes place without a time lag when
the temperature has increased by approx. 18 °F (10 °C).
15.7 Analog inputs
Available inputs depending on the functional module fitted in the
pump:
To set up an analog input, make the settings below.
Function
The analog inputs can be set to these functions:
• Not active
• Feedback sensor
• Ext. setpoint influence
See section 15.15 Setpoint influence
• Other function.
Measured parameter
Select one of the parameters, i.e. the parameter to be measured
in the system by the sensor connected to the actual analog input.
Unit
Available measuring units:
Electrical signal
Select signal type (0.5 - 3.5 V, 0-5 V*, 0-10 V, 0-20 mA or 4-20 mA).
Sensor range, min. value
Set the minimum value of the connected sensor.
Sensor range, max. value
Set the maximum value of the connected sensor.
15.8 Pt100/1000 inputs
Available inputs depending on the functional module fitted in the
pump:
Function
The Pt100/1000 inputs can be set to these functions:
• Not active
• Feedback sensor
• Ext. setpoint influence
See section 15.15 Setpoint influence
• Other function.
Measured parameter
Select one of the parameters, i.e. the parameter to be measured
in the system.
Pump variant FLOW
LIMIT
TPE3 (D) ●
TPE2 (D) -
TM05 7908 1613
Pump variant Automatic Night Setback
TPE3 (D) ●
TPE2 (D) -
Note
Note
You cannot enable Automatic Night Setback
when the pump is in constant-curve mode.
H
Q
Q
max
Q
max
Q
limit
25 %
90 %
Setting range
Function (terminal)
FM 200
(standard)
FM 300
(advanced)
Analog input 1, setup (4) ●●
Analog input 2, setup (7) ●●
Analog input 3, setup (14) - ●
Parameter Possible units
Pressure ft, psi, bar, m, kPa
Pump flow gpm, m
3
/h, l/s, yd
3
/h
Liquid temperature °F, °C
Other parameter %
Function (terminal)
FM 200
(standard)
FM 300
(advanced)
Pt100/1000 input 1, setup (17 and 18) - ●
Pt100/1000 input 2, setup (18 and 19) - ●