KEPCO BOP 500M, Руководство оператора, Страница: 47 / 48

BOPHV020411
3-21
FIGURE 3-25. INDEPENDENT REMOTE CONTROL OF THE BOP (+) I
O
AND (–) I
O
LIMITS
3.4.3 REMOTE CONTROL OF THE BOP VOLTAGE LIMIT
The BOP E
O
LIMIT CIRCUIT in the local (front panel) control mode is shown in FIG. 3-26. The
circuit functions in the same manner as the I
O
LIMIT CIRCUIT described previously (refer to
PAR. 3.4.2) and can be remotely controlled symmetrically with a 0 to 10V d-c source, or the (+)
and (-) voltage limit can be controlled independently by individual 0 to 10V d-c sources. The
necessary circuit connections are illustrated in FIG.'s 3-27 and 3-28. NOTE: The front panel
VOLTAGE LIMIT CONTROLS serve as a “back-up” when remote controlling the voltage limits
on the BOP. The front panel VOLTAGE LIMIT CONTROLS should be set to their maximum posi-
tions if full range remote control of the BOP voltage limits is desired.
FIGURE 3-26. LOCAL (FRONT PANEL) CONTROL OF THE BOP VOLTAGE LIMIT CIRCUITS