Setup Guide for the RadioRA Chronos System Bridge
13
Section 1 - Getting S
tarted
Step 3
Wiring to Input Devices
Note:
• Input devices can be driveway sensors,
photocells, security systems, etc.
Contact Closure Compatibility:
The input closures
are intended for use with devices that provide main-
tained or momentary outputs in the form of dry con-
tact closure or open collector outputs meeting the fol-
lowing criteria:
• On saturation voltage: < 1.0 V at 2 mA
• Off leakage current: < 10.0 µA at 12 V
• Outputs must stay in the closed or open state for
at least 40 msec in order to be recognized by the
Chronos
System Bridge
If there is any question as to whether the contact clo-
sure device is compatible with these specifications,
contact the manufacturer of that device.
Contact Closure Wiring:
Caution - DO NOT
apply voltage between any two
terminals on the
Chronos
System Bridge contact clo-
sure input terminal block. This will cause improper
operation and could damage the
Chronos
System
Bridge and the connected equipment.
Installing the Chronos
TM
System Bridge
TM
Step 4
Connect the RS-232 Cable
Connect a DB9 male RS-232 cable to the
RS-232 connector.
To select the proper RS-232 cable for your
application, see the RadioRA RS-232
Protocol and Programming Guide
(P/N 044-038).
Security
System
Other Equipment
Contact Closures
RS232 Connector
To External Device
DANGER -
• Do not connect line voltage power to the
Chronos
System Bridge.
• Connecting line voltage power or improper
wiring can result in personal injury or
damage to the
Chronos
System Bridge or
to other equipment.
• All external control equipment must
maintain Class 2 isolation.
