3
ground). Output B always operates in the Fail-Secure mode, it will not activate during a loop fault condition
(Relay B Normally Open contacts open, Relay A Normally Closed contacts closed or Solid State Output A not
sourced to ground) regardless of the setting of this switch. The factory default setting is
OFF
(Output A Fail-
Secure).
Output
Loop Failure - Output A Fail-Safe
Loop Failure - Output A Fail-Secure *
A
Output ON
Output OFF *
B
Output OFF
Output OFF *
* Factory default setting.
Output B Output Mode (DIP Switches 7 and 8)
Output B has three (3) modes of operation: Pulse-on-Entry, Pulse-on-Exit, and Presence. DIP switches 7 and 8 are
used to configure the Presence and/or Pulse output modes of Output B.
When set to operate in Pulse mode (DIP switch 8 set to
OFF
), Output B can be set to provide a 250 millisecond
pulse when a vehicle enters or exits the loop detection zone. DIP switch 7 is used to select Pulse-on-Entry or
Pulse-on-Exit. When DIP switch 7 is
OFF
, Pulse-on-Entry is selected. When DIP switch 7 is
ON
, Pulse-on-Exit
is selected.
When set to operate in Presence mode (DIP switch 8 set to
ON
), Output B presence hold time is the same as
Output A.
The table below shows the various combinations of switch settings and Output B modes of operation.
Switch
Pulse-on-Entry *
Pulse-on-Exit
Presence
Presence
7
OFF *
ON
OFF
ON
8
OFF *
OFF
ON
ON
* Factory default setting.
III
Reset
Changing any DIP switch position (except 1 or 2) or the Sensitivity level setting will reset the detector. After
changing the frequency selection switches, the detector must be reset.
IV
Failed Loop Diagnostics
The
FAIL
LED indicates whether or not the loop is currently within tolerance. If the loop is out of tolerance, the
FAIL
LED will flash at a rate of one flash per second. If and when the loop returns to within tolerance, the
FAIL
LED will flash at a rate of one flash every five seconds to indicate that an intermittent loop fault has occurred and
has been corrected. This flash rate will continue until another loop fault occurs, the detector is reset, or power to
the detector is interrupted.
V
Pin Connections (Reno A & E Wiring Harness Model 802-4)
Pin
Wire Color
Function
Relay Outputs
Solid State Outputs
1
Black
DC +
DC +
2
White
DC Common
DC Common
3
Orange
Relay B, Normally Open (N.O.)
Output B Collector (Drain)
4
Green
No Connection
No Connection
5
Yellow
Relay A, Common
DC Common
6
Blue
Relay A, Normally Open (N.O.)
Output A Collector (Drain)
7
Gray
Loop
Loop
8
Brown
Loop
Loop
9
Red
Relay B, Common
DC Common
10
Violet or
Black / White
Relay A, Normally Closed (N.C.)
No Connection
11
White / Green
or Red / White
Relay B, Normally Closed (N.C.)
No Connection
NOTES:
All pin connections listed above are with power applied, loop(s) connected, and no vehicle detected.
On the Solid State version (BX-LP-SS), the two Outputs (Output A and Output B) are FET devices that sink current to DC
Common (i.e. the FET Output switches the load to DC Common). To operate properly, the output must be connected as
shown below:
If the output is being used to turn on an inductive device such as a relay, a snubber diode should be wired in parallel with
the relay coil.
DC Common
Detector
+ VDC
Load
Output A, Output B, or Fail Output
Optional Diode
