Specifications

4-10
Normal Max…0-255 seconds, replaces normal max
timer when max plan is in effect.
Fail Max…0-255 seconds, only used when the phase
is placed In “Max Fail Recall due to a detector failure.
Normally set lower than normal max (see Detector
Fail Monitoring).
DETECTORS
PRIOR MENU SELECTION 6....DETECTORS....
SELECTION 1....MEMORY/CALL/EXTEND
PG DWN….detectors 9-24….
Detector programming provides phase assignable in-
puts, detector switching, memory on/off per input, and
stretch/disconnect/delay timing.
The default settings for detectors 1-8, as shown, are
for standard NEMA operation, with no switching,
stretch, disconnect, or delay features programmed.
The default state for detectors 9-24 is for no
operation (as indicated by all 0’s). The LMD units are
in the default state when shipped, The controller
clear code will also lead default values. The features
provided are described as follows
MEMORY……This program allows memory on/off
status to be assigned at the input level. It could be
used in applications where on input would have
memory on but another has memory off. For
example, a dedicated right turn lane could have
memory on-although they both call the same phase.
Note: In order to use independent memory on/off
assignment at the input level, the phase level on/off
status must be programmed off (the phase level is
assigned from the MEMORY/RECALL/CNA menu). If
program-med on at the phase level, calls will be
latched regardless of the input memory status.
CALL PH…….The phase to which the input will
place a call (during red). The call phase can be
programmed as:
0 = No phase called by detector input
1-8 = Call phase 1-8 (1 phase per detector input)
EXT/SW……Assigns extension and switch phases.
The EXT phase is extended if it is green, regardless
of SW phase-if it is green or not. The SW phase is
extended only if it is green and the EXT phase is not.
For example:
0/0 = No Extension phase, no switch phase. May be
used for “call only” detector, where a phase is
assigned to call, but not extend.
1/1= Normal. Since the EXT and SW phase are the
same, the detector would operate normally (NEMA).
1/6 = Extend phase 1 if phase 1 is green. Switch to
phase 6 if it is green only (phase 1 is not green).
STRETCH, DISCONNECT and DELAY
PG DWN or PRIOR MENU…Selection 2….
PG DWN FOR DETECTORS 9-24
DELAY….Pertains to call phase, during red only.
The detector zone must be continuously occupied
during the delay period for a call to be placed on the
phase (whether memory is on or off).
STRETCH…Pertains to the EXT/SW phase(s) during
the green only. Stretches the end of the pulse by the
programmed value. T
DISCONNECT….Pertains to CALL phases only,
during green. The discontent timer is held at full
value during green, and the input is active (low). If
not active (high) the timer times down and the
detector input will be effectively disconnected or
unresponsive to further activity
MODE…..
0 = N o r m a l s t r e t c h m ode
1-8 = The delay timer only times if the enable phase
is green. Typically used with 5 section head
protected/permissive left turns on the main street to
enable the delay only when in the opposite thru green
(e.g. ph 2 is the enable for ph 1’s delay). This
prevents a resting main from immediately terminating
when a left turn actuation arrives. ..yet prevents
skipping a late arriving left turn when cycling around
from the side street.
--DETECTOR PROGRAMMING MENU—
1.MEMORY/CALL/EXTEND 3.DET FAIL MINITOR
2.DELAY/STR/DIS 4.DET SIMULATION
DET INP 1 2 3 4 5 6 7 8
MEMORY OFF OFF OFF OFF OFF OFF OFF OFF
CALL PH 1 2 3 4 5 6 7 8
EXT/SW 1/1 2/2 3/3 4/4 5/5 6/6 7/7 8/8
DET INP 1 2 3 4 5 6 7 8
DELAY 0 0 0 0 0 0 0 0
STR/DIS 0 0 0 0 0 0 0 0
MODE 0 0 0 0 0 0 0 0