BECKWITH ELECTRIC M-2601, Инструкция

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1
Front Panel Controls – 2
2–1
2
Front Panel Controls
2.0 Introduction ............................................................................... 2–1
2.1 COMM Port ............................................................................... 2–1
2.2 Status Indicators ....................................................................... 2–1
2.0 Introduction
The front-panel user interface consists of an
RS-232 serial communications port and five status
indicators as shown in Figure 2-1, M-2601 Front
Panel (M-2602 and M-2603 each possess identical
user interface).
2.1 COMM Port
The RS-232 serial communications port is located
at the top of the Autodaptive
®
Regulator Control
front panel. Connections are made through a
standard DE-9 type female connector. The pinout
is of the computer type (DTE) configuration, and
will typically require a null-modem type cable. See
Appendix A, Null Modem Cable for pinout.
2.2 Status Indicators
RAISE LEDs – These LEDs indicate that the voltage
is below the band and the timer has started timing
for a tapchanger raise operation. The timer circuit
first illuminates a GREEN LED, to indicate the
initial timing phase, which is greater than 5 minutes
to the anticipated switch operation. The middle
timing period is indicated by an AMBER LED, which
anticipates a switch operation in one to five minutes,
and the final timing phase prior to switching is
indicated by illuminating a RED LED, which
anticipates a switch operation in less than 1 minute.