Standard 1460, Руководство пользователя

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1460/61 INSTRUCTION MANUAL
Page 12
INSTALLATION
b.) Connect the cable from J1 on the CPU board (mounted on Door Ass'y) to J5 on the main board
(mounted on Chassis Ass'y).
B.) Applying Power:
1.) Remove the protective cover on TB5 of the main board. Save the protective cover for
step II.B.3.
CAUTION: ELECTRIC SHOCK HAZARD! Ensure that NO electrical power is present on any wire
before installation.
2.) Connect the AC power wires to the 1460. The wiring diagrams on page 14 show the proper connec-
tions to TB5 of the main board.
CAUTION: RISK OF ELECTRIC SHOCK! Chassis ground (“GND” terminal) MUST be
connected to conduit/Earth ground to provide proper protection from electric shock.
NOTE: Chassis ground (“GND” terminal) MUST be connected to conduit/Earth ground to provide proper
protection of Master Time Programmer circuitry.
NOTE: Do not connect field devices at this time.
3.) Replace the protective cover over TB5 of the main board.
4.) Apply power to the 1460 by switching its circuit breaker on at the circuit breaker
panel.
a.) The 1460 should show the time and date (there may be as much as a 30 second delay after
power up for the display to show time and date).
b.) The LEDs on the main board (and on the 1464(s), if installed) blink at a rate of about once per
second.
C.) Adjusting the Display:
1.) Adjust the contrast of the display, if necessary.
a.) Contrast affects the display’s readability. The following diagram will help you decide if the
contrast of your display needs to be adjusted. IF CONTRAST OF THE DISPLAY IS ACCEPT-
ABLE, SKIP THE REMAINDER OF STEP 1.
b.) If the contrast needs to be adjusted, locate jumper W1 on the CPU board (see diagram on
page 15). W1 sets the contrast for the display. If W1 is removed, the contrast becomes
lighter. If W1 is installed, the contrast becomes darker.
c.) Remove power to the 1460 by switching its circuit breaker off at the circuit breaker panel.
d.) Adjust the contrast of the display.
i.) If contrast is too dark, cut jumper W1 of the CPU board.
ii.) If contrast is too light and jumper W1 of the CPU board is already cut, reinstall
jumper W1.
GOOD
CONTRAST
Good contrast- text is easy to read
TOO
DARK
Contrast is too dark- text is difficult to read
through the darkened background
Contrast is too light- text is not dark enough to
read
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