The main products

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

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, machinery, electronics, automobile manufacturing, tobacco, plastics machinery, electric power, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution and so on.

3BHB003230R0101 5SXE05-0152 Thyristor module

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

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.

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 - any protection device within the fan supply has acted or - a wire is broken or - the propeller became loose or something similar The fan current may be too high because - the fan may be blocked mechanically or - there is a short circuit in the fan winding or something similar The overcurrent during acceleration can be suppressed by the software.

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