ISA DRTS.3 PLUS - Auxiliary Outputs; Interface Connections; Operators Lights; Sequence of Commands

Doc. SIE62153 Rev. 1 Page 12/24
- Timer range: 0 - 999,999.9999 s (277 hours); resolution: 0.1 ms. In cycles: 0 to 50,000,000
cycles (50 Hz), or 0 to 60,000,000 cycles (60 Hz); resolution: 0.005 cycles (50 Hz).
- Timer accuracy: 0.025% of the measure ± 0.1 ms, for input changes lasting more than 1 ms.
- Event recording, at the maximum frequency of 1 kHz; maximum 512 transitions per channel.
- Impulse time measurements available:
• Count of transitions in a given time;
• Time corresponding to N transitions; N programmable from 1 to 9,999,999.
- Frequency range for impulses: 0 to 50 kHz.
3.9 Auxiliary outputs
- Four auxiliary contacts (A1, A2, A3, A4), timed, voltage clean, not polarized, whose
termination C, N.O., N.C. are connected to safety banana connectors or to the A+C 28 way
connector.
- For each output, a light turns on when it is closed.
- Characteristics of the contacts with a resistive load:
. A.C.: 300 V; 8 A; 2400 VA;
. D.C.: 300 V; 8 A; 250 W.
- Range of programmable delay: from 0 to 999.99 s.
3.10 Interface connections
- Interface 1: RS232.
- Characteristics of RS232 interface:
. Transmission rate: 57,600 baud.
. Serial interface cable: 2 meters, included.
. Protocol: BUSY/READY.
- Interface 2: USB.
- Characteristics of USB interface:
. Transmission rate: 3x minimum.
. Interface cable: 2 meters, included.
3.11 Operator’s lights
- The following lights are mounted on the operator panel of the instrument:
. OK: it turns on after power-on and after self-check.
. !: it turns on when an output (V or I) detects an overload, or in case of an internal failure of the
instrument.
. ERR: it turns on in case of a failure of the internal logic circuits.
. ON: it turns on whenever there is a voltage or current on the outputs of the instrument.
Below the USB interface a light confirms that data are being exchanged with the PC.
3.12 Sequence of commands
- The PC software allows controlling the instrument for the execution of automatic or manual tests.
- The elementary operations which compose all tests are: