English (GB)
20
18. Electrical data
Supply voltage
See the nameplate.
Digital inputs
Analog inputs
Digital outputs (relay outputs)
All digital outputs are potential-free relay contacts.
Inputs for PTC sensor/thermal switch
For PTC sensors to DIN 44082. Thermal switches can also be
connected.
19. Related documents
Further product information about the booster systems can be
found in the following documents.
All documents are available on www.grundfos.com > International
website > WebCAPS.
* Only relevant for Hydro Multi-B booster systems, variants E
and ES.
** A wiring diagram is supplied with the booster system.
20. Service
20.1 Service documentation
Service documentation is available on Grundfos Product Center
on the specific product.
If you have any questions, please contact the nearest Grundfos
company or service workshop.
21. Disposal
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest Grundfos company
or service workshop.
Subject to alterations.
Open-circuit voltage
24 VDC
Closed-circuit current
5 mA, DC
Frequency range
0-4 Hz
Note
All digital inputs are supplied with PELV voltage
(Protective Extra-Low Voltage).
Input current and voltage
0-20 mA
4-20 mA
0-10 V
Tolerance
± 3.3 % of full scale
Repetitive accuracy
± 1 % of full scale
Input resistance, current
< 250
Ω
Input resistance, voltage
10 k
Ω
± 10 %
Supply to sensor
24 V, maximum 50 mA per
sensor, short-circuit-protected
Note
All analog inputs are supplied with PELV voltage
(Protective Extra-Low Voltage).
Normally open contacts
(DO1, DO2 and DO3)
C, NO
Normally closed contacts
(DO4 and DO5)
C, NC, NO
Maximum contact load
240 VAC, 2 A
Minimum contact load
5 VDC, 10 mA
Note
Some outputs have a common C terminal.
For further information, see the wiring diagram
supplied with the booster system.
Open-circuit voltage
8 VDC ± 15 %
Closed-circuit current
1.7 mA, DC
Note
Inputs for PTC sensors are electrically separated
from the other inputs and outputs of the booster
system.
Title
Frequency
[Hz]
Publication
number
Data booklets
Grundfos Hydro Multi-B
50/60
97896424
Grundfos Hydro Multi-B,
ASEAN range
50/60
98810490
Installation and operating instructions
CM
50/60
95121197
CRE, CRIE, CRNE, CRKE,
SPKE, MTRE, CME*
50/60
96564245
CU 323
50/60
97775216
Diaphragm tank
-
96550312
Service documentation
Service instructions
50/60
97916525
Service kit catalogue
50/60
96488862
Other documentation
**
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