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21UD
19
Setting and Installation methods
4-2. Installing the Keyboard [KE-2]
Keyboard and Display is connected with communication cable(5m) of attachment. Please
install it in the place that is easy to operate a key by a range of a communication cable
length. Please do not wire a communication cable in parallel with power Line so that a
noise does not appear.
When you do not use an attached communication cable, please use a twist pair cable with
Shield, please connect a shield and the ground side of twist pair cable to GND terminal.
Keyboard unit wil be damaged when you make a mistake in wiring of signal Line, please be
careful
※
A communication cable is shipped in a state connected to a keyboard unit.
Remove a back screw, and
there is the terminal level
when you open a cover.
To Display
【Relay load】
OUT
COM
【Lamp load】
Exterminal
power source
External power
(GND)
OUT
COM
External
power source
External power
(GND)
Resistance for
preventing inrush corrent
Lamp
Diode for preventing the
back electromotive force
Relay
Absolute max rating
DC
35
V
50m
A
Max rated relay contact load
AC125V0. 5A or DC24V1A
Summary of Contents for 21UD
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Page 78: ...21UD 70 Dimensional drawing 2 command large sized type 2 command middle sized type ...
Page 79: ...21UD 71 Dimensional drawing 4 command large sized type 4 command middle sized type ...
Page 80: ...21UD 72 Dimensional drawing KE 2 ...
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