ZIEHL-ABEGG FXDM Operating Instructions Manual

Contents

ZIEHL-ABEGG FXDM Operating Instructions Manual Manual pdf 17 page image

5.4.2 Required quality attributes for the mains voltageDanger due to electric currentThe mains voltage must comply with the EN 50160 quality characteristics and the defined standardvoltages in IEC 60038!5.4.3 Leakage current, securely attached, ground wire double up to 10 mm²Danger due to electric currentIn accordance with the defined networks in DIN EN 60990, the device has a leakage current > 3.5 mAso it must be permanantly connected. The protective ground must be made double in accordance withEN 50178 Point 5.2.11and 5.3.2.1 up to a cross section of at least 10 mm².5.5 Residual-current-operated protective deviceDanger due to electric currentFor an installation of r.c.d. protection, it shall be observed that this must be of “universal-currentsensitivity” (Type B). In accordance with EN 50 178, Section. 5.2. other types of current-operatedprotective devices may not be used. To ensure as high a degree of reliability as possible , werecommend a tripping current of 300 mA.5.6 Inverter output5.6.1 Motor connectionThe motor leads are connected to the terminals: PE, U, V, W. Several fans can be connected to thecontroller-the maximum total current of all motors must not exceed the current rating for the controller.Information• It is recommended that a separate motor protection unit be foreseen for each fan.• For motors with thermistors “TP” (PTC thermistor) e.g. type U-EK230E• For motors with thermostats “TB” (thermal contacts) e. g. type STDT16 or AWE-SK ( Enclosure:Connection suggestion for several motors with motor protection unit type STDT.)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 onthe 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 underfull modulation of the controller.5.7 Motor protectionMotor protection is possible by connecting thermostats “TB” (thermal contacts) or thermistors “TP”(PTC).• When several motors are connected ensure that the thermal contacts “TB” or PTC resistors “TP”are always connected in series. A maximum of six individual thermistors (DIN 44081 or DIN 44082)may be connected in series to a single device. Depending on the motor type, at least two or threeindividual sensors are built in.• Monitoring of motors in Ex zones is not permissible. For systems of this type, an additional posistortripping unit is required, with disconnection via a separate motor protection circuit.The unit switches off when a connected thermostat or thermistor has tripped the circuit (interruptionbetween both terminals “TB/TP”). The unit then remains switched off. A programmed fault-indicatingrelay is triggering.Operating Instructions Fcontrol – model series FXDM Electrical installationL-BAL-E072-GB 1642 Index 008 Part.-No.17/105