FOC signal transmission for SSI + HTL/TTL (up to 400 kHz)

Accessories – electronic

Module set (transmitter FO-TX-4 + decoder FO-DX-4) for absolute values (SSI) and incremental signals (HTL or TTL)
Extremely fast and highly precise FOC signal transmission up to 1000 m (patent pending)
Designed for highly dynamic control of drives, including motor commutation
Just one fiber optic cable carries all data, integrated monitoring

The speedsters for absolute values and incremental signals

Comprising the FOC transmitter FO-TX-4 and the FOC decoder FO-DX-4, the innovative module set operates extreme quickly, highly precise and completely interference-free. It transmits incremental signals (HTL or TTL) as well as absolute values (SSI). These high-performance FOC modules always prove their value as powerful team players when high frequencies are demanded of the SSI encoder to ensure reliable and robust drive control, for example, motor commutation in mining or steel industry applications. In combination with the SSI absolute encoders ASS(H) 40 or ASSH 60 (equipped with an additional incremental output), the FOC modules FO-TX-4 and FO-DX-4 also guarantee interference-free and fast signal transmissions in those environments up to 1000 m, even at clock frequencies >2 MHz. All data is transmitted along one fiber optic cable, whose performance is monitored continuously by means of integrated cable break and status monitoring.

Technical Data

Attribute	Value
Product usage	Implement FOC transmission path (1 FOC cable) for very fast and dynamic control processes (absolute + incremental)
Supply voltage	12-30 VDC
Signal input	Transmitter FO-TX-4 Signal input (from encoder): Absolute SSI: DATA, DATAG, STATUS Incremental: 0°, 90°, N, STATUS; each with inverted signals Signal transmission (outputs transmitter module): Optical (to decoder): Fiber optic 62.5/125 µm or 50/125 µm with ST connectors. All data transmitted via a single fiber optic cable Electrical (to absolute encoder): SSI clock frequency CLK, CLKG Signal level: Absolute SSI: RS 422 Incremental (configurable via DIP switches): HTL differential HTL single-ended RS 422 TTL single-ended
Signal output	Decoder FO-DX-4 Signal output (to controller): Absolute SSI: DATA, DATAG, STATUS, STATUSG Incremental: 0°, 90°, N, STATUS; each with inverted signals Signal transmission (inputs decoder module): Optical (from transmitter): Fiber optic 62.5/125 µm or 50/125 µm with ST connectors. All data transmitted via a single fiber optic cable Electrical (from controller): SSI clock frequency CLK, CLKG Signal level: Absolute SSI: RS 422 Incremental (selectable via a variety of module types): HTL differential (FO-DX-4 H) TTL, RS 422 (FO-DX-4 T)
Frequency range	Transmitter FO-TX-4: Incremental: Up to 400 kHz (1 MHz for RS 422) Absolute SSI (transmitter as master for SSI absolute encoder), preset ex works (adjustments on request): 3.67 MHz (CLK frequency) Timeout 2 µs Resolution 13 bit (12-30 bit) Decoder FO-DX-4: Absolute SSI (controller as master for decoder), preset ex works: 2 MHz (CLK frequency) Timeout 20 µs Resolution 13 bit (adjustments on request: 12-30 bit)
Casing	FO-TX-4 / FO-DX-4: Electronic housing for standard mounting rails
Dimensions	FO-TX-4 / FO-DX-4: 25 x 122 x 117 mm
Device temperature range	-20 °C to +70 °C
Degree of protection	FO-TX-4 / FO-DX-4 (for switchboard): IP20
Electrical connection	FO-TX-4 / FO-DX-4: Terminal strips and FOC connector to outside of module
Device options	Constant throughput time <1 µs (transmitter input to decoder output) Very high sampling rate; incremental signal jitter <15 ns Very high SSI clock frequencies >2 MHz in combination with SSI absolute encoders ASS(H) 40/60 FOC range up to 1000 m Integrated cable break and status monitoring
Mechanical options	-
Special features and certificates	New transmission technology – patent pending