The TD236 enhanced detector has been designed using the latest technology in order to meet the requirements of a vast number of traffic applications in terms of operating conditions.
The primary function of the detector is to detect vehicle presence by means of an inductance change caused by the vehicle passing over a wire loop buried under the road surface.
The detector has been designed for ease of installation and convenience. Its modes of operation are selected by switches on the front of the unit. The switches also allow for different loop frequency settings and sensitivity settings.
The detector oscillator is multiplexed to eliminate any possibility of crosstalk between the loops connected to the detector.
The TD236 Enhanced detector provides visual outputs on the front of the enclosure and relay change-over contacts are connected at the rear.
|Self-tuning range:||20 to 1000 μH|
|Sensitivity:||Four step switch selectable:
High 0.02% D L/L
Medium-High 0.05% D L/L
Medium-Low 0.10% D L/L
Low 0.50% D L/L
|Frequency:||Four step selectable: 12-80Hz
(Frequency dependent on loop geometry)
|Modes:||Output relays may operate in the Presence ( fail-safe), or Direction logic modes|
|Presence Time:||Switch selectable:
1 Second, 4 Minutes, 40 Minutes,
No fixed time-out (limited presence)
(No fixed time-out dependant on inductance change - approx. 1 hour for 3% D L/L)
|Response Times:||75 milliseconds|
|Visual Indication:||1 x Power LED - Red
2 x Channel Status LED - Green
|Relay Outputs:||2 x Relays, user configurable as Presence or Pulse outputs, normally Open (N/O) contacts|
|Reset:||Reset by push button on front of enclosure|
|Surge Protection:||Loop isolation transformer, gas discharge tubes, and Zener diode clamping on loop input|
|Power requirements:||120V AC +/- 10% (48 - 62Hz)
230V AC +/- 10% (48 - 62Hz)
12-24V AC/DC +/- 10% (48 - 62Hz)
Requirements - 1.5VA max @ 230V or 1.0VA max @ 12V
|Relay Contact Rating:||2 x Relays rated - 5A @ 230 VAC|
|Operating Temperature:||-40°C to +70°C|
|Humidity:||Up to 95% relative humidity without condensation|
|IP Rating:||IP 30|
|Housing material:||ABS blend|
|Mounting Position:||Shelf or DIN rail mounting|
|Connections:||11-pin submagnal type|