Jaquet MultiTasker T601, Инструкция по эксплуатации

Страница: 16 / 73

Instruction Manual T601 JAQUET AG
Revision: 004
16/73
4 Principle of Operation
4.1 General
T601’s are microprocessor controlled and operate on the period measurement principle whereby the input
signal period is measured during the measurement interval. The frequency is determined from the reciprocal
of the average input period. The relationship between frequency and speed is determined by the machine
factor.
The status of System Limits can be affected by various inputs. Inputs to System Limits may be logically
combined AND or OR. System limit inputs may be: speed inputs, analog input, a math function of the 2 speed
values or the analog input, both binary inputs, creep, direction, CAN interface.
A hysteresis may be set in the case of both speed inputs, the analog input and the math function.
The 6 System Limits may be variously defined in 4 parameter sets that may be selected via binary inputs.
The 4 relays and 2 open collectors may be assigned to react to the System Limits. The 2 open collectors may
alternatively be used to output the input frequency (f), frequency x2, frequency x4.
In the case of limits, the relay and open collector status may be latched and then reset via binary input.
The system permanently monitors itself. Sensors may in addition be monitored. Sensor alarm may be used in
the configuration to influence System Limits. System error would influence the relays, open collectors and
analog outputs and the front panel LED would go out.
Frequency outputs (Open Collector Outputs) are not influenced by the machine factor but where so defined
correspond to the input signal. For frequency x2 or x4 the 2 input signals should ideally be phase shifted by 90
degrees.
Parameter input is via resident PC software and the Ethernet interface. This may also be used to interrogate
the unit, display measurement and unit status.
The parameters are safely stored in EEPROM.