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

HONEYWELL 05701-A-0511 The framework

Handwheel (NC, Numeric Control) The HT 401/NC features an incremental encoder, a so-called electronic handwheel (Numeric Control). In this HT version, the emergency stop switch is mounted at the narrow side at the top of the device.Main features • 100 lock-in positions / revolution • 1 pulse / lock-in position • Output signals: 2 channels: A, A , B, B (A, B 90 ° phase quadrature) • Output circuit: RS-422-A / optically isolated • Max. load: 20 mA per output The incremental encoder can be evaluated internally or externally. Internal Evaluation If the encoder is evaluated internally by the HT 401 the PLC must only read the pulse count from the HT. The handwheel pulses are evaluated by the processor and can be read by the PLC via a register. 100 pulses are counted per revolution. Turning the handwheel clockwise increments the count, turning the handwheel counter-clockwise decrements the count (0 - 65535, 16-bit value).External Evaluation For the external evaluation, the connections of the incremental encoder are optically isolated and connected to the terminals of the connection board via a driver. Pulse diagram The following pulse diagram shows the corresponding output signal of the channels A, A and B, B when the handwheel is turned clockwise.

Connection

 The handwheel signals are directly available on the connection board. The connection to the counter input of the PLC is established by shielded lines.

Handwheel and Override Potentiometer (NCO) In addition to the built-in handwheel, the HT 401/NCO features override potentiometers. The two override potentiometers are evaluated in the handheld terminal by the software and can be read by the PLC. They can be used for example for setting the number of spindle revolutions and the forward feed on machine tools.

Key Switch (SS) Optionally, all HTs are also available with a key switch (SS). The key switch is connected to the digital input DI 1 and can be read by the PLC.