21
v
Connect an external device to the EXT I/O terminals.
When connecting an external device, remove 9 mm - 10 mm
{11/32" - 13/32"} of the outer jacket of the cable and twist the
cable core to prevent the short circuit first.
Specification of cable (wire): 22 AWG - 28 AWG
Single core, twisted
* Check whether the stripped part of the
wire is not exposed and is securely con-
nected.
Important:
• Do not connect 2 wires or more directly to a terminal. When it is necessary to connect 2 or
more wires, use a splitter.
• Connect an external device with verifying that the ratings are within the specifications above.
• When using the EXT I/O terminals as the output terminals, ensure they do not cause signal col-
lision with external signals.
<Ratings>
• Alarm output
AUX output
Output specification: Open collector output (maximum applied voltage: 20 V DC)
Open: 4.5 V - 5.5 V DC by internal pull-up
Close: Output voltage 1 V DC or less (50 mA or less)
• Alarm input
Input specification: No-voltage make contact input (4.5 V - 5.5 V DC, internally pulled up)
OFF: Open or 4.5 V - 5.5 V DC
ON: Make contact with GND (required drive current: 1 mA or more)
Strip range
9 mm - 10 mm
{11/32" - 13/32"}
4 3 2 1
Terminal 4: GND
Terminal 3: Alarm input/Alarm output/
AUX output
Terminal 2: Alarm input/Alarm output
Terminal 1: Alarm input
