C
ONNECTING
CT-6 P
ROBE
TO
C
ONTROL
U
NIT
See Figure 2 on page 2. At the control unit, connect the RED probe wire to terminal No. 17;
connect SHIELD (Drain) wire to terminal No. 18; and connect the BLACK wire to terminal No. 19.
M
ULTI
-P
ROBE
A
SSEMBLIES
See Figure 4. The CF-2C system can support up to 100 standard CT-6
probes without loss of sensitivity when wired in series. The probes should be
hooked up as shown in Figure 4. All interconnections must be soldered and
taped. Solder-tin the leads before connecting to terminals Nos. 17, 18, and 19.
P
HASING
P
ROBES
Phasing of multi-probe assemblies is important when a probe is placed on both sides of the same
driveway, or several probes are linked together to cover a large area. Phasing is not important in
installations where a vehicle does not pass between two probes, such as probes used on separate
driveways or when several probes are linked together at greater than 50 foot intervals. The phase
output of the probe is controlled at the time of manufacturing. Please contact technical support at
(800) 878-7829
for more information.
P
ROBE
S
YSTEM
S
UPERVISION
When the probe wire is cut or the probe has been damaged by lightning (and thereby “open-
circuited”) or the BLACK wire is shorted to the SHIELD wire, the PROBE FAULT red LED light
located on the circuit board will light and the sounder(s) will continuously cycle on and off, indicating
the probe system has been violated.
For example, if yard work was being done and the CF-2C went into PROBE FAULT mode, that
would indicate when the wire was damaged. In high security areas, this feature is extremely
valuable.
If the RED and BLACK probe wires are shorted together, the PROBE FAULT SYSTEM will not go
into alarm mode and the CF-2C control will not respond to the probe or the TRIP TEST button.
If the circuit board has stopped working, use the instructions in “USING PROBE FAULT MODE
FOR TESTING” (see below) to test the CF-2C circuit board. To test the probe for possible damage,
refer to “CT-6 Probe and Wire Check-out” on page 3.
SPECIAL NOTE
: To disarm the sounder cycle and to test the circuit board when in the PROBE FAULT
mode, remove the probe wires from terminal Nos. 17, 18, and 19; then short out terminals No. 17 and
19 by connecting a wire between them. The PROBE FAULT light should immediately go out and the
cycling should stop in about a minute. If the LED does not go out, there is component failure on the
circuit board.
Another way to stop the cycling is to cut the “stand up” diode lead of D2. D2 is located center right on
the board to the right of, and adjacent to, the TRIP TEST button. The board is marked in white letters
“D2” under the diode.
U
SING
P
ROBE
F
AULT
M
ODE
FOR
T
ESTING
With power applied and the probe wires disconnected, if the LED does not light, there may be
power supply failure. If the LED does light but does not cycle the annunciator(s), the cause may be
related to one of three things:
1. The exit delay timer has not timed out (see “Adjusting CT-A1 Exit Delay” on page 9.)
2. Wiring problems going to terminal No. 9
3. Component failure on the circuit board
6
Figure 4
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