Details introduction

Mirco GF1-10TVD-100 control panel

The power interface board PG 73x2 is used for converter units type DCP50x. There are 2 different versions in use. The used types are: - PG 7302 for 875 A...1650 A 4-Q-converters at 400/500 V - PG 7352 for 875 A...1650 A 2-Q-converters at 400/500 V Fig. 5.7/1 Layout of the interface board PG 73x2. The PG 73x2 boards consists of: - firing pulse circuits and pulse transformers - measurement of the armature current - AC and DC high ohmic voltage measurement - scaling for rated current, zero current detection and HW type coding - interface to heat sink temperature measurement (fan current monitoring)Spare part The protection of the power part is done by using RC and snubber circuits. The snubber circuit is protected by fuses F71, F72 and F73. The AC voltage measurement is taken from behind the fuse. Fuse data: Ferraz 25 A/660 V; Type 6,621 CP URD 22.58 Q/25

The protection of the power part is done by using RC and snubber circuits. The snubber circuit is protected by fuses F71, F72 and F73. The AC voltage measurement is taken from behind the fuse. Fuse data: Ferraz 25 A/660 V; Type 6,621 CP URD 22.58 Q/25

Power interface board PG 7303

 The power interface board PG 7303 is used for converter units type DCP50x with index D. There is only one version in use. PG 7303 for 875 A...1650 A for 2-Q and 4-Q-converters at 400/500 V Attention has to be paid to the exchangeability of the boards. The DCP converters are equipped with different boards. The types with the index A, B and C within the type code use the power interface board PG 7302 (4-Q) or PG 7352 (2-Q) and the fan monitoring board PW 1001 (the board PG 7302 can be used as a spare part for the PG 7352, but not vice-versa!). The types with index D use the power Fig. 5.8/1 Layout of the interface board PG 7303. interface board PG 7303 (2-Q and 4-Q) and the fan monitoring board PW 1002. The control board SDCS-CON-2 has to be equipped either with software 21.232 (or higher) or with S15.208/15.610 (or higher). The PG 7303 boards consists of: - firing pulse circuits and pulse transformers - measurement of the armature current - AC and DC high ohmic voltage measurement - scaling for rated current, zero current detection and HW type coding - interface to heat sink temperature measurement (fan current monitoring)

Fan current monitoring 

The heatsink temperature of the power part of some DCS converters is monitored via a PTC element. Other DCS converters check the cooling air temperature and the airflow. The third option is this one, which measures the fan current being within limits. In case the fan current is too low or there is no fan current at all or it is too high, the drive needs to be switched off. The fan current may be too low because - the fan may not be switched on or Data AC input / output voltage: single phase; 230 V AC input / output current: 5 A AC peak current: according to fan starting current; external switching device needed AC isolation voltage: 690 V (supply via autotransformer) Load: single phase AC motors with starting capacitor Frequency: 50 Hz / 60 Hz Output data: passive device; to be used together with DCS electronics only Terminal cross sectional area: X92: power supply; max. 2.5 mm2 X11: to X31: motor connection; 6.3 mm faston Current scaling: burden resistor R100 / R101; R100/R101 = 120
each Interconnection: See part power section cooling of DCP converters 5.9.1 PW 1002 This device is designed and used exclusively at DCP converters above 800 A directly in default condition. It is supplied by a 230 V single phase power supply and will monitor the two single phase fans mounted on top of the converter in parallel configuration. The transfer characteristic is identical to the one described at the PW 1003. The part power section cooling within this manual shows the interconnections between the power supply, the fans and the interface board PG 7xx3

The main products

Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

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