Grundfos CUE Series Service Instructions

English (GB)
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5. Upgrading the firmware
The firmware package is downloaded from Grundfos Technical
Information found on Insite under "Toolbox".
1. Go to Grundfos Insite and select "Toolbox".
2. Select "GTI - Grundfos Technical information".
3. Select "Service Support Tools".
4. Select the CUE firmware.
5. Copy the files to a USB stick.
6. Additional information
6.1 Special service tools
6.2 Tightening torques
Tightening torques for terminals
1)
Conductor cross-section ≤ 95 mm
2
.
2)
Conductor cross-section ≥ 95 mm
2
.
ABC
Pos. Description Further information Part number
A Torque screwdriver 0.5 - 4.0 Nm SV0435
B
Digital multimeter, type RMS, CAT III / 1000 V, (KAT III/1200 V for 400/690 V), with
diode testing function
C Clip-on amperemeter
Enclosure
Tightening torque [Nm]
Mains Motor Earth Relay
91, 92, 93 96, 97, 98 95, 99 01-06
A2 1.8 1.8 3 0.6
A3 1.8 1.8 3 0.6
A5 1.8 1.8 3 0.6
B1 1.8 1.8 3 0.6
B2 4.5 4.5 3 0.6
B3 1.8 1.8 3 0.6
B4 4.5 4.5 3 0.6
C1 10 10 3 0.6
C2
14
1)
/ 24
2)
14
1)
/ 24
2)
30.6
C3 10 10 3 0.6
C4
14
1)
/ 24
2)
14
1)
/ 24
2)
30.6

Grundfos CUE Series Specifications

General

Category	DC Drives
Output Voltage	24 V DC
Control Signal	0-10 V, 4-20 mA
Communication	Modbus RTU
Protection Features	Overvoltage, overcurrent, overtemperature, short circuit
Humidity	5% to 95% (non-condensing)
Enclosure class	IP20
Enclosure Rating	IP20