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.

1756-EWEB Redundant channel module

The safety functions provide a previously unknown, intelligent and direct link right through the system to the electric drives and measuring system. Reliable operation, fast response and wide acceptance mean that this certified safety concept is extremely effective. A two–channel, diverse system structure has been formed on the basis of the existing multi–processor structure. The safety functions have been configured redundantly in the NC, drive and internal PLC. A feature of this safety concept is that a measuring system, the standard motor measuring system, can already satisfy the safety requirements. A second sensor is not necessary but can be added as an additional, direct measuring system, e.g. linear scale. It has been clearly seen that new practical machine operation concepts can be implemented with this innovative safety technology. The result is a new standard for machines which makes them safer and more flexible to use and which increases the availability of the entire plant.

VPM Voltage Protection Module

The Voltage Protection Module VPM (voltage limiting module) is used for permanent–magnet synchronous motors with an EMF of 800 Vrms up to 2000 Vrms in order to limit the DC link voltage at the converter in the case of a fault. The Voltage Protection Module is connected between the power module and motor in the motor cable. If, at maximum speed, the line voltage fails, or if as a consequence of this, the converter pulses are deleted, the synchronous motor feeds back the full voltage into the DC link. The VPM identifies an excessively high DC link voltage (> 800 V) and short–circuits the three motor feeder cables. The energy remaining in the motor is converted into heat as a result of the short–circuit between the VPM and the motor feeder cables. The Voltage Protection Module is available in 3 different versions When using third–party synchronous motors (generally, with higher inductances then 1FE motors), when combining a third–party synchronous motor with a series reactor as well as the combination of 1FE motor with series reactor, then the VPM 200 Dynamik should be used.

Integration

 It must be installed according to the connection schematic VPM 120 (Fig. 8-42) or VPM 200/200 Dynamic (Fig. 8-43). Series reactors may only be connected between the VPM and motor. Clearances of approx. 200 mm must be provided above and below the unit for cable entry. It can be mounted in any position. It is not permissible that switching elements are inserted in the connecting cables U, V ,W between the drive, VPM and motor! The air intake temperature, measured 10 mm below the unit, may not exceed 55 °C. Caution After switching off all of the voltages, hazardous voltages are present for up to 4 minutes (capacitance of the 611 converter capacitor). The voltage must be measured to ensure that there are no hazardous voltages present!