Spectrex SafEye Xenon 700S, Руководство пользователя

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Output Signals
32 SafEye
TM
Xenon 700S Gas Detector User Guide
Table 6: Optional - Discrete Reading of 0–20mA at Different Detector
Modes
Current Reading Status and Description
LEL.m
Setting
0+0.3mA Fault 2 or Low Voltage -
1±0.3mA Zero Calibration -
2±0.3mA Fault 1 -
3±0.3mA “Maintenance Call” -
4±0.5mA Standby -
14±0.5mA Warning 1
19±0.5mA Alarm 3
21mA Concentration is over the range limit
(more than full-scale concentration)
3.2.2 Dry Contact Relays
The detector may include up to 3 of the following relays depending on the
wiring configuration:
 Fault relay
 Alarm relay
 Accessory relay
Alarm and accessory relays are normally non-energized open. When the
detector is in alarm or warning status, the appropriate relay is closed.
Fault relay is normally energized closed, and when it is in the fault
condition, the relay is opened.
3.2.3 RS-485 Interface
The detector has an RS-485 Modbus-compatible input/output that can send
data communication to a PC loaded with the appropriate host software, and
receive data or control commands from the PC.