Rae 222-1 Series User manual

P/N 889-0701-02 Rev June 2020 4 Model 222-1 Operating Instructions
iii. Detect / Fail LEDs:
The Model 222-1 detector has a single two color (green / red) light emitting diode (LED)
per channel to indicate a Call output and/or the status of any current or prior loop failure
conditions. A green indication signifies a Call output (detect state). A red indication
signifies a loop failure condition. A continuous ON (green) state indicates a Call output.
A continuous ON (red) state indicates that a current open loop failure condition or an
inductance change condition of greater than +25% exists. This indication also generates
a Call output. A one Hz (red) flash rate indicates that a current shorted loop failure
condition or an inductance change condition of greater than -25% exists. This indication
also generates a Call output. A flash rate of three 50 millisecond (red) flashes per second
indicates a prior loop failure condition. A flash rate of three 50 millisecond (red) flashes
per second followed by a single 750 millisecond (green) flash indicates a prior loop
failure condition and a current Call output (detect state).
If either channel has the audible detect feature activated, that channel’s Detect / Fail LED
will be illuminated in an orange state for any Call output condition.
Detect / Fail LED Meaning
OFF No Detect (No Call Output)
Solid ON (Green) Detect (Call Output)
Solid ON (Orange) Audible Detect Signal Activated
Detect (Call Output)
Solid ON (Red)
Open Loop Failure
or
Inductance change condition of
greater than +25% exists
One Hz flash rate (Red)
(50% Duty Cycle)
Shorted Loop Failure
or
Inductance change condition of
greater than -25% exists
Three 50 ms (Red) flashes per
second Loop Failure condition occurred but no longer exists
Three 50 ms (Red) flashes per
second followed by a single 750
ms (Green) flash
Loop Failure condition occurred but no longer exists
and
Detect (Call Output)
Three 50 ms (Red) flashes per
second followed by a single 750
ms (Orange) flash
Loop Failure condition occurred but no longer exists
Audible Detect Signal Activated
and
Detect (Call Output)
III. Reset:
Changing the position of any of an individual channel’s front panel mounted DIP switches
(except the Frequency switches) resets the channel. When the detector is installed and
operating, the most convenient method for resetting a channel is to momentarily change the
position of the Presence / Pulse DIP switch and then return it to its original position. The
detector can be reset by reapplying power after a power loss. Both detector channels will
also be reset when Pin C is momentarily connected to DC Common.
Operating Instructions
Model 222-1 Series
Firmware Version 222 2.1
TWO CHANNEL
DIP SWITCH PROGRAMMABLE
LOOP DETECTORS
I. General:
The Model 222-1 is a scanning, two channel, card rack mounted loop detector. Once the
detector is plugged into an appropriately wired card rack with 10.8 to 30 VDC present, the
detector will begin to operate. The detector automatically tunes itself and is operational
within two seconds after application of power or after being reset. Full sensitivity and hold
time require approximately 30 seconds of operation. The detector is fully self-compensating
for environmental changes and loop drift over the full temperature range and the entire loop
inductance range. The Model 222-1 is available with solid state or relay outputs.
The operation of each channel is independent and is programmed using two front panel
mounted eight-position DIP switch modules. Each channel has a single, dual color (green /
red) Detect / Fail LED indicator. The LED provides an indication of the channel’s output
state and loop failure conditions. Output state conditions are indicated when the Detect / Fail
LED is illuminated in a green state. Loop Failure conditions are indicated when the Detect /
Fail LED is illuminated in a red state.
The Model 222-1 is a version of the Caltrans approved Model 222 that has the Fail-Safe /
Fail-Secure DIP switch disabled and is defaulted for Fail-Safe operation.
II. Controls and Indicators:
i. Front Panel Mounted Programming DIP Switches:
The two, eight-position DIP switch modules located on the front panel that are labeled 1
and 2 affect each channel independently. To turn one of these DIP switches ON, push the
switch to the left.
SENSE
LEVEL
4
2
1
PRES PULS
1
2
FREQ
DISABLE
( )
FAIL SAFE
SW ON
1
8
7
6
5
4
3
2
8 Sensitivity Levels: 0to 7
Presence or Pulse Mode
Switch Disabled (Detector Operates in Fail-Safe Mode)
4 Frequency Selections: 0to 3
Disable or Enable Channel
Front Panel Eight-position DIP Switch
(Factory Default Settings Shown)

2 3
Channel Disable (DISABLE) (DIP Switch 1):
When the DISABLE DIP switch is turned ON, the channel’s output is continuously in
the No Call state regardless of the presence or absence of vehicles over the loop. The
loop oscillator is not activated when the channel is in the disabled state. The factory
default setting of this switch is OFF.
NOTE: Changing the Channel Disable switch setting will reset the detector channel.
Frequency (FREQ) (DIP Switches 2 and 3):
Each channel of the Model 222-1 detector has four (4) frequency selections that allow
altering the resonant frequency of the loop circuit. DIP switches 2 and 3 are used to
select the frequency for a given channel. The value (1or 2) to the left of the DIP switch
is assigned to the switch when the switch is ON. If the switch is OFF, the switch has a
value of zero (0). By adding the switch ON and OFF values, the two switches will
combine for values from 0 to 3 that indicate one of the four frequency selections. The
following table is a reference for the switch settings and associated frequency selections.
NOTE: After changing any Frequency switch setting(s), it is necessary to reset the
detector channel by momentarily changing one of the other switch positions.
Frequency Switch 3 Switch 2 Effective Value
HI
* OFF * OFF * 0 + 0 =
0
*
MED HI ON OFF 1 + 0 =
1
MED LO OFF ON 0 + 2 =
2
LO ON ON 1 + 2 =
3
* Factory default setting.
Fail Safe / Fail Secure Mode (FAIL SAFE) (DIP Switch 4):
The Model 222-1 is a version of the Caltrans approved Model 222 that has the Fail-Safe /
Fail-Secure DIP switch disabled and is defaulted for Fail-Safe operation. When DIP
switch 4 is turned ON or OFF, the channel’s output maintains a Call state during a loop
failure condition.
NOTE: Changing the Fail-Safe / Fail-Secure switch setting will reset the detector
channel.
Presence / Pulse Mode (PRES PULS) (DIP Switch 5):
DIP switch 5 controls the output mode of each channel.
PRESENCE (PRES): When the switch is in the ON position, Presence Mode is
selected. Presence Mode will hold the smallest vehicle for four minutes minimum and
either a small truck or a car typically for one to three hours. This is the factory default
setting and the most common setting.
PULSE (PULS): When the switch is in the OFF position, Pulse Mode is selected.
Pulse Mode will generate a single 125 millisecond pulse output for each vehicle
entering the loop detection area. Any vehicle remaining in the loop longer than two
seconds will be tuned out providing full sensitivity for the vacant portion of the loop
detection zone. Full sensitivity for the entire loop detection zone is recovered within
one second following the departure of any vehicle, which has occupied the loop for
longer than two seconds.
NOTE: Changing the Presence / Pulse switch setting will reset the detector channel.
Sensitivity (SENSE LEVEL) (DIP Switches 6, 7, and 8):
There are eight (8) selectable sensitivity levels for each channel. The eight sensitivity
levels are selected via DIP switches 6, 7, and 8 on each of the two front panel mounted
eight-position DIP switch modules. The value (1, 2, or 4) to the left of the DIP switch is
assigned to the switch when the switch is ON. If the switch is OFF, the switch has a
value of zero (0). By adding the switch ON and OFF values, the three switches will
combine for values from 0 to 7 that indicate one of the eight sensitivity level selections.
Choose the lowest sensitivity level that will consistently detect the smallest vehicle that
must be detected. Do not use a sensitivity level higher than necessary. The factory
default setting is Sensitivity Level 6: -∆L/L = 0.02% for detection. The following table is
a reference for the switch settings and associated sensitivity selections.
NOTE: Changing the Sensitivity Level setting will reset the detector channel.
Sense Level -ΔL/L Switch 6 Switch 7 Switch 8 Effective Value
0 1.28% OFF OFF OFF 0 + 0 + 0 =
0
1 0.64% ON OFF OFF 1 + 0 + 0 =
1
2 0.32% OFF ON OFF 0 + 2 + 0 =
2
3 0.16% ON ON OFF 1 + 2 + 0 =
3
4 0.08% OFF OFF ON 0 + 0 + 4 =
4
5 0.04% ON OFF ON 1 + 0 + 4 =
5
6 * 0.02% * OFF * ON * ON * 0 + 2 + 4 =
6
*
7 0.01% ON ON ON 1 + 2 + 4 =
7
* Factory default setting.
ii. Front Panel Mounted Pushbutton - Audible Detect Buzzer:
A front panel mounted pushbutton labeled BUZZER is used to enable an audible detect
signal that is emitted any time a given channel’s detection zone is occupied. To activate
this feature, press the pushbutton. Only one channel can have this feature active at any
given time. The first time the pushbutton is pressed, a short (50 millisecond) audible
signal confirms the activation of the feature for Channel 1. The second time the
pushbutton is pressed, two short (50 millisecond) audible signals confirm the activation
of the feature for Channel 2. To deactivate this feature, press and hold the pushbutton for
one second. A long (250 millisecond) audible signal confirms the deactivation of the
feature. This feature will automatically turn off 15 minutes after activation.
NOTE: When operating in Pulse mode, the audible detect signal will cease if a vehicle
occupies the detection zone for more than two seconds.