Grundfos UPML, Инструкция по установке и эксплуатации

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13
English (US)
Alarm output signal
An alarm output signal is available.
Output transistor status indicates pump operation
• Activated: Pump is OK Running and input voltage > 0.5V
• Stop (commanded)
• Stop (because of alarm)
• Not activated: Pump fault
• Running and input voltage < 0.5V (interpreted as cable break)
Fig. 15 Output profile 0-10 VDC
7. Starting up the product
• The pump may stop when the inspection screw is loosened.
• When the pump is connected to power the pump starts
automatically either on the pre-set control mode or the last
stored setting (AUTO) or with the speed that refers to the
externally control signal (PWM/VDC)
• When connected to an external PWM signal, the pump speed
is controlled by an external controller which may even stop the
pump.
• Without signal, the pump will run at maximum speed (profile
heating).
• In special systems (e.g. with check valve at the top of the
pump), it might be necessary to check if the system has been
vented completely by opening the inspection screw in the
middle of the nameplate.
Rating Value
Rated input voltage - high level U
IH
4-24 V
Rated input voltage - low level U
IL
< 1 V
High-level input current I
IH
< 10 mA
Input duty cycle PWM 0-100 %
PWM frequency output, open collector f 75 Hz ± 5 %
Accuracy of output signal regarding
power consumption
-
± 2 % of PWM
signal
Output duty cycle PWM 0-100 %
Collector-emitter breakdown voltage
on output transistor
U
C
< 70 V
Collector current on output transistor I
C
< 50 mA
Max. power dissipation on output
resistor
P
R
125 mW
Zener diode working voltage U
Z
36 V
Max. power dissipation in Zener diode P
Z
300 mW
T
M
07
05
78
04
1
8
PWM output [%] Pump info
100 Standby (stop) or alarm stop
0 Pump is running
100
90
80
70
60
50
40
30
20
10
PWM ou
tput
[%]
Standby (Stop) or alarm stop
Pump is running
CAUTION
Hot liquid
Minor or moderate personal injury
- When loosening the inspection screw, be aware
of hot, spraying water.
Flush the system of debris before installation.
The pump must not run dry.
The required minimum inlet pressure must be
available at the pump inlet.
Do not start the pump until the system has been filled
with liquid and vented.
The pump is self-venting, and does not need to
manually be vented before start-up.
The system cannot be vented through the pump.
Air in the pump may cause noise. This noise ceases
after a few minutes of running.
Air inside the pump will be transported by the
medium into the system during the first minutes after
pump start-up.
UPMM_UPML_UPMXL_US.book Page 13 Tuesday, February 26, 2019 10:18 PM