![background image](http://html1.mh-extra.com/html/nidec/leroy-somer-d700/leroy-somer-d700_installation-and-maintenance-manual_1687797016.webp)
Electric Power Generation
Installation and maintenance
5747 en - 2018.10 / a
Dual plate D700
16
On the "Inputs/Outputs" page
•
Inputs DI14 to DI16 are assigned as follows:
•
DI14: activation of "Maintenance" mode. This mode can be used to set the D700 offline. Redundancy
between the two AVRs is then no longer active: only the second D700 is able to regulate. If maintenance
mode has been activated on one of the two D700s, it prevents "Maintenance" mode on the second D700.
•
DI15: indicates that the second D700 is active (in regulation mode)
•
DI16: indicates that the second D700 is online (ready for regulation)
•
Outputs DO1, DO2 and DO10 are assigned as follows:
•
DO1: is activated if the AVR is "active"
•
DO2 and DO10: are activated if the AVR is "online"
3.3. Checks prior to commissioning
First it is necessary to check the wiring and general operation of the plate.
Step 1
: Install and check the plate wiring in accordance with the wiring diagrams supplied to you with the plate
and possibly with the generator.
Step 2
: Supply the AVRs and the control circuit with 250 VAC power. Check that:
•
Both AVRs are powered up and running: the displays come on at start-up or when one of the interface keys
is pressed, the power supply LED on each D700 is green.
•
The control circuit relays are supplied with power.
Step 3
: Check that the AVRs are in "redundancy" mode:
•
Either with the EasyReg Advanced program, "Wiring" page: the “Redundancy second D700" box should be
checked, with the "Master regulator" box checked on AVR 1 and unchecked on AVR 2.