
TYM 1000/2000 Slide Gate Operator Installation Guide
- 21 -
Rev 9 02/14
Model
25002346
Operating Instructions
Plug-in Vehicle Loop Detector
Single Channel – Dual Solid State Outputs
General/Overview:
The
Tymetal Corp. Model 25002346
operates on 12 VDC, 24 VDC, and 24 VAC. The detector is designed to handle gate, parking, drive-through,
and
all
access
control
applications
where
solid-state
outputs
are
required
for both the “detect and “fail” outputs. From a diagnostic standpoint,
the
Model 25002346
automatically
and
continuously senses
three
(3)
types
of possible
loop fault conditions: Open Loop(s), Shorted Loop(s),
sudden changes in inductance exceeding 25% of the nominal inductance.The
Model 25002346
also displays the frequency of the loop upon power
up.
I
mmediately
after
applying
power,
the
unit
displays
2
or
3
numbers
quickly
flashing
(values
between
13 and 150 kilohertz) before the
DEFLECTOMETER
resets to zero.
This allows you to measure and separate the frequency of each detector loop. The detector frequency should
be adjusted so that there is a minimum of 5 kilohertz of separation between all adjacent loops.
Setting Sensitivity:
The
DEFLECTOMETER
(front panel 7-segment LED) aids in setting the detector to the most optimum sensitivity level to help
ensure the detection of all vehicles, including motorcycles and high bed vehicles.
For typical vehicles (mid-size vehicle / small pick up) utilizing properly installed roadway loops, when the number 4, 5, or 6
(5 being optimum)
is displayed on the DEFLECTOMETER during the DETECT output period then the sensitivity is set correctly.
For high profile vehicles (commercial trucks, 4x4’s, etc…), DEFLECTOMETER reading 3 or 4 will be best. For low profile vehicles
(sports cars, etc…), DEFLECTOMETER reading 6 or 7 will be best.
Adjusting sensitivity utilizing the DEFLECTOMETER (Recommended)
:
The DEFLECTOMETER should read zero (0) with no vehicle over the roadway loop.
If a mid-size vehicle, located over the roadway loop causes the number “7” to be displayed on the DEFLECTOMETER, you need
to lower the sensitivity two levels (7 – 2 = DEFLECTOMETER reading 5). This can be done by pressing the front panel SENS
(down) push button twice.
If a mid-size vehicle, located over the roadway loop causes the number “2” to be displayed on the DEFLECTOMETER, you need
to add three sensitivity levels (2 + 3 = DEFLECTOMETER reading “5”. This can be done by pressing the front panel SENS
(up)
push button 3 times.
Another great feature to note is that the sensitivity dynamically updates after each push button position change, allowing you to
change sensitivity settings while a vehicle is over the loop zone.
Adjusting sensitivity without using the DEFLECTOMETER (Manually set Sensitivity):
The Model
25002346
offers 9 levels of sensitivity (1 to 9). This can be manually set to any desired level by pressing the SENS
or SENS
front panel push buttons when a vehicle is NOT over the roadway loop. The sensitivity level will be displayed on the 7-
segment LED. The factory default is level 4. Pressing the SENS
or SENS
switch once will display the sensitivity without
changing the setting. After pressing the SENS
or SENS
switches to display the sensitivity, the sensitivity can be changed by
pressing the SENS
or SENS
switches again. The display will automatically return to the normal display after several
seconds.
Dip Switch Functions:
Dip Switch 1 & 2 – Frequency
: The operating frequency is controlled by the setting of switches 1 & 2 of the 8 position DIP Switch. Occasionally
when loops are in close proximity to each other, it may be necessary to select different frequencies for each loop detector to avoid loop interference
(crosstalk). The actual loop frequency is a function of the size of the loop, number of turns of loop wire in the loop, length of the lead-in cable, and the
setting of the frequency switches. When power is applied to the detector, the operating frequency (between 13 and 150 kilohertz) is displayed on the
front panel 7-segment LED (2 or 3 numbers will quickly flash before the DEFLECTOMETER goes to zero) allowing you to measure the frequency of
each detector/loop. The detector frequency should be adjusted so that there is a minimum of 5 kilohertz of separation between all adjacent loops.
Dip Switch 3 – Fail-Safe / Fail-Secure Operation
: Either Fail-Safe or Fail-Secure Operation is controlled by the setting of switch 3 of the 8 position
DIP Switch. The default position is Fail-Safe (switch 3 in the OFF position). If a loop fault occurs while in the Fail-Safe mode, Output A activates. If a
loop fault occurs in the Fail-Secure mode (switch 3 is in the ON position) Output A will not activate.
Dip Switch 4 & 5 – Output “B” Modes (pin 6)
: Output B has 4 selectable output modes: Loop Fault, B same as A, Pulse on Exit, Pulse on Entry.
For Loop Fault Mode, if the loop fails the Output B will conduct indicating the failure. For either Pulse on Entry or Pulse on Exit a 250 millisecond
pulse is generated on Output B. The default position is set to Loop Fault (switch 4 = 0FF & switch 5 = OFF).
SWITCH
Loop Fault
B same as A
Pulse On Exit
Pulse On Entry
4
0FF
ON
OFF
ON
5
0FF
OFF
ON
ON
TYM 2300-2346