In order to maintain PELV, all connections made to the control
terminals must be PELV. For example, the thermistor must have
reinforced or double insulation.
Wiring diagram, MCB 114
When using Pt100 with a 3-wire cable,
the resistance must not exceed 30 Ω.
Activating the optional STO function
The STO function is activated by removing the voltage at terminal
37 of the frequency converter. By connecting the frequency
converter to external safety devices providing a safe delay, an
installation for a Safe Stop 1 is obtained. External safety devices
need to fulfil Cat./PL or SIL when connected to terminal 37.
The STO function can be used for the following motor types:
• asynchronous
• synchronous
• permanent magnet motors.
When terminal 37 is activated, the frequency converter issues an
alarm, trips the unit and coasts the motor to a stop. A manual
restart is required. Use the STO function to stop the frequency
converter in emergency stop situations. In normal operating mode,
the STO terminal 37 must be deactivated to start the motor.
A successful commissioning test of the
STO function is required after the
initial installation and after each
subsequent change to the installation.
Servicing the product
CAUTION
Electric shock
Minor or moderate personal injury
‐
Before starting any work on the
product, make sure that the power
supply has been switched off and
that it cannot be accidentally
switched on.
‐
Touching the electrical parts may
be fatal, even after CUE has been
switched off.
Conduct a functional test every 12 months to detect any failure or
malfunction of the STO functionality.
To conduct the functional test, perform the following steps:
• Remove the 24 V DC voltage supply at terminal 37.
• Check if the operating panel displays the alarm Safe Stop A68.
• Verify that the frequency converter trips the unit.
• Verify that the motor is coasting and comes to a complete stop.
• Verify that the motor cannot be started.
• Reconnect the 24 V DC voltage supply to terminal 37.
• Verify that the motor is not started automatically and restarts
only by giving a reset signal (via bus, Digital I/O or the RESET
button).
Operating conditions
Relative humidity
5-95 %
Ambient temperature
Max. 50 °C
(122 °F)
Average ambient temperature
over a period of 24 hours
Max. 45 °C
(113 °F)
Minimum ambient temperature
at full operation
0 °C (32 °F)
Minimum ambient temperature
at reduced operation
-10 °C (14 °F)
Temperature during storage and
transport
-25 to +65 °C
(-13 to +149 °F)
Storage duration Max. 6 months
Maximum altitude above sea
level without performance
reduction
1000 m (3280 ft)
Maximum altitude above sea
level with performance reduction
3000 m (9840 ft)
CUE comes in packaging that is not
suitable for outdoor storage.
Cable requirements
Maximum length, screened
motor cable
150 m (500 ft)
Maximum length, unscreened
motor cable
300 m (1000 ft)
Maximum length, signal cable 300 m (1000 ft)
Always comply with local
regulations on cable cross-sections.
Cable cross-sections to signal terminals
Maximum cable cross-section to
signal terminals, rigid conductor
1.5 mm
2
(14 AWG)
Maximum cable cross-section to
signal terminals, flexible
conductor
1.0 mm
2
(18 AWG)
Minimum cable cross-section to
signal terminals
0.5 mm
2
(20 AWG)
Non-UL fuses and conductor cross-sections to mains and
motor, for installations outside North America
Typical shaft
power P2
Maximum fuse
size
Fuse type
Maximum
conductor
cross-section
1
[kW (hp)] [A]
[mm
2
]
1 x 200-240 V
1.1 (1.5) 20 gG 4
1.5 (2) 30 gG 10
2.2 (3) 40 gG 10
3 (4) 40 gG 10
3.7 (5) 60 gG 10
5.5 (7.5) 80 gG 10
7.5 (10) 100 gG 35
3 x 200-240 V
0.75 (1) 10 gG 4
1.1 (1.5) 20 gG 4
1.5 (2) 20 gG 4
2.2 (3) 20 gG 4
3 (4) 32 gG 4
3.7 (5) 32 gG 4
5.5 (7.5) 63 gG 10
7.5 (10) 63 gG 10
11 (15) 63 gG 10
10
English (GB)
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