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5.4.3
Required quality attributes for the mains voltage
Danger due to electric current
The mains voltage must comply with the EN 50160 quality characteristics and the de
fi
ned standard
voltages in IEC 60038!
5.4.4
Leakage current, securely attached, protective earth conductor
Danger due to electric current
The maximum leakage current depends on the type of device and the connected mains voltage (
Technical Data). With regard to
fi
xed connection and the type of PE conductor connection, the
speci
fi
cation for the leakage current must be observed under consideration of the locally valid
standards (for Europe
EN 50178 Section 5.2.11 or 5.3.2.1 etc.).
Minimum cross-section for PE conductor for
fi
xed connection = 1.5 mm
2
!
5.5
Residual-current-operated protective device
Danger due to electric current
To ensure as high a degree of reliability as possible we recommend a release current of 300 mA,
where a residual current circuit breaker (type A) is used.
Residual current circuit breaker (type A)
Exception: All-current-sensitive fault current circuit breaker on the 3 ~ 230 V line
When connecting the device between two outer conductors,
“
all-current-sensitive
”
fault current circuit
breakers must be used (see EN 50 178, Art. 5.2).
5.6
Inverter output
5.6.1
Motor connection
The motor leads are connected to the terminals: U1, U2. Several fans can be connected to the
controller-the maximum total current of all motors must not exceed the current rating for the controller.
Change direction of rotation
wiring diagram fan!
Information
•
It is recommended that a separate motor protection unit be foreseen for each fan.
•
For motors with thermistors
“
TB
”
e.g. type S-ET10.
5.6.2
Disconnection between controller and motor (repair switch)
Ideally, a repair switch should be installed
before the controller
(supply line disconnect).
In the case of complete disconnection (entire load) after the controller, the enable (controller OFF /
ON) must be disconnected simultaneously. I.e., an additional control contact is needed. Switching on
the motor while simultaneously issuing the enable (ON) achieves secure energizing with low satura-
tion of the controller. For this a programming is necessary (
IO Setup Enable ON / OFF).
Attention!
When switching on the motor plus existing release: under certain circumstances, this can occur under
full modulation of the controller.
5.7
Motor protection
The motor can be protected by connecting thermostats
“
TB
”
.
When multiple motors are connected, it is essential to ensure that thermostats
“
TB
”
are always
connected in series.
If a connected thermostat is tripped (break between the two terminals
“
TB - TB
”
), the device is
switched off and is not switched back on. Programmed operating and fault signaling relays are
activated.
Operating Instructions
Fcontrol
–
model series FXET4/6/10AMQ
Electrical installation
L-BAL-E079-GB 1706 Index 008
Part.-No.
15/87