Fiso EGD-LT, Руководство пользователя

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EasyGrid LT User Guide
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Relays 5.6
- The EasyGrid LT Relay can be programmed for failsafe operation, but in order to keep the
EasyGrid LT internal temperature to the lowest achievable temperature, monitor is sent with all
relays programmed for normal operation.
- If you need a specific relay programmed for failsafe operation you could do so, but keep in mind
that each relay coil activated dissipate 0.5W (4W if all the 8 relays are in failsafe mode). FISO
recommends setting for failsafe operation only the required relay.
- Failsafe operation means that when in alarm, the relay contacts are in their "normal," de-
energized, or "shelf-state" positions. In other words, normally closed relays are closed in alarm,
and normally open relays are open in alarm.
- With failsafe operation, a power failure equals an alarm.
For non-failsafe operation, the following are true:
- Under non-alarm conditions, the relay closes the circuit between the common and the N.C.
(normally closed) terminals.
- Under alarm conditions, the relay changes state to close the circuit between the common and
the N.O. (normally open) terminals.
For failsafe operation, the following are true:
- The relay is energized when power is applied to the module.
- The relay in a non-alarmed condition has power applied to the coil.
- In alarm condition, power is removed from the relay coil, causing the relay to change state.
- Under non-alarm (with power applied to the unit) conditions, the relay closes the circuit
between the common and the N.O. terminals.
- Under alarm or loss-of-power conditions, the relay changes state to close the circuit between the
common and the N.C. terminals.
Relay Ratings: 5A @ 250VAC / 5A @ 30VDC