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Grundfos CU 3 2 Series User Manual

Grundfos CU 3 2 Series
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English (GB)
12
7. Startup
Startup must be carried out by an authorised person.
8. Technical data
Transient voltages typically present on the mains
supply are category 2.
Altitude above sea level
Maximum 2000 m.
Ambient temperature
During operation: -20 to +60 °C
(must not be exposed to direct sunlight).
In stock: -20 to +60 °C.
During transportation: -20 to +60 °C.
* At temperatures below 0 °C, the display may
react slowly.
Relative air humidity
5 to 95 %.
Enclosure class
IP1X.
For indoor use only.
Pollution degree
External pollution degree 3.
9. Electrical data
9.1 Supply voltage
1 x 100-240 VAC ± 10 %, 50/60 Hz, PE
(Class 1 equipment).
9.2 Power consumption
Maximum 22 W.
9.3 Circuit breaker
Installation of circuit breakers must be done in
accordance with local regulations.
9.4 Backup fuse
Maximum 10 A. Both standard fuses as well as
quick- and slow-blow fuses are suitable.
9.5 Short-circuit protection
Use fuses that comply with IEC 60127.
USA and Canada (branch circuit protection):
Use a UL/CSA-listed non-time delay (high capacity)
fuse that complies with the UL248 series or an
inverse time circuit breaker that complies with
UL489.
Fuse types RK1, RKS, J and CC are acceptable.
9.6 Digital inputs
9.7 Analog inputs
9.8 Digital outputs (relay outputs)
9.9 Conductors
9.10 USB port
Warning
Prior to startup, read the installation and
operating instructions for the product in
question.
Open-circuit voltage 24 VDC
Closed-circuit current 5 mA, DC
Frequency range 0-4 Hz
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 > 50 kΩ ± 10 %
Supply to sensor
24 V, 30 mA,
short-circuit
protected
Normally open contacts C, NO
Maximum contact load 240 VAC, 2 A
Minimum contact load 5 VDC, 10 mA
Rigid conductors
0.5 - 2.5 mm
2
20-13 AWG (US)
Flexible conductors without
ferrule
Flexible conductors with
ferrule
With/without plastic collar
0.5 - 1.5 mm
2
20-13 AWG (US)
USB port USB 2.0, type B

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Grundfos CU 3 2 Series Specifications

General IconGeneral
BrandGrundfos
ModelCU 3 2 Series
CategoryControl Unit
LanguageEnglish

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