The control circuit terminals are common for all sizes H1 … H8.
Location of the control circuit board SDCS-CON-H01
The SDCS-CON-H01 is mounted on an electronic tray. The electronic tray is attached in the housing by means
of two hinges.
Watchdog function
The SDCS-CON-H01 has an internal watchdog. The watchdog controls the proper function of the SDCS-CONH01 and the firmware. If the watchdog trips, it has the following effects:
– the thyristor firing control is reset and disabled
– all DI’s will not be processed
– all DO’s are frozen in the actual state
– all AI’s will not be processed
– all programmable AO’s are frozen in the actual stateArmature circuit interface
The function for the armature circuit interface consist of:
– Firing the armature bridge of 6 or 12 thyristors.
– High ohmic measurement of DC and AC voltages.
– Residual measurement current of armature circuit to ground
= 5 mA at 500 V supply ( 1 M).
– Interface for the current transformers for current measurement.
– Snubber circuit for the thyristor protection together with R1 on the heatsink.
– Interface for heatsink temperature measurement with a PTC.
– Fuses for overvoltage protection and field circuit.
Following connectors are available:
- Four identical channels for current measurement on the mains side via CTs connected to X231 / X232, X241 / X242,
X251 / X252 and X261 / X262.
The AC current is rectified by diodes on the measurement board.
The burden resistor is automatically scaled by the type code setting in the firmware for CT ratios of either 1:2500 or
1:4000.
- AC voltage and motor voltage are measured by four different types of inputs.
20 VAC … 100 VAC: Voltage measurement via X15. For this remove the zero Ohm resistors R221 … R225.
This results in 1.2 MOhm inputs.
100 VAC … 525 VAC: Voltage measurement via XU2, XV2, XW2, XC2 and XD2 (about 1 MOhm to ground).
526 VAC … 1000 VAC: Voltage measurement via XU1, XV1, XW1, XC1 and XD1 (about 2 MOhm to ground).
100 VAC … 1200 VAC: Galvanically isolated voltage measurement via X15. For this DC-DC transductor A92 and
transformer T90 have to be used. X15 provides 27.4 kOhm inputs.
- X22 is used for DCS880 NTC temperature sensor.
- XC12 connection to SDCS-CON-H01 (size H6) or SDCS-OPL-H01 (size H7, H8)
The prices of all products of Zhangzhou Fengyun may fluctuate at any time. The specific price is subject to the customer service quotation. Please confirm the model, product, price and other details with the customer service before placing the order. Second-hand and brand-new products are sold in the store. Please contact the customer service for details.
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