CG350 Security Pulse Manual
The output provides a common terminal from the relay with a normally open and normally closed contact.
The input and output terminals are isolated from each other. The common of the relay output does not need to be at the input ground level.
Different sizes of grommets are provided for the strain relief.
This allows for different wire sizes.
1. Set the output frequency. See Setting the Frequency.
2. Connect the crank wire (12 VDC) to the positive input terminal on J1, pin 1. Please refer to the drawing Suggested Wiring.
3. Connect the engine ground to the ground input terminal on J1, pin 3.
4. Connect the engine ground to the common terminal on J2, pin 6.
5. Connect the engine controller input that requires the frequency signal to the normally open output terminal of the terminal block J2, pin 4.
6. Test with engine or other equipment disconnected.
1. Connect the positive wire of a 12 VDC supply or battery to the positive
input terminal on J1, pin 1. Please refer to the drawing Frequency
Generator.
2. Connect the battery or power supply ground to the ground input terminal
on J1, pin 3.
3. Connect 12 VDC to the common terminal on J2, pin 6.
4. Connect the meter positive lead to the normally open terminal on J2, pin 5.
5. Connect the negative lead of the meter to the negative of the power supply or battery connected to the output. Turn on the power
6. Adjust the potentiometer until the desired frequency is obtained. Turning the potentiometer clockwise will increase the frequency. The potentiometer will "click" when it reaches the end of the travel, but will keep turning. The potentiometer has an adjustment range of 25 turns.
7. Record the number of turns for future reference.
1. Connect the positive wire of a 12 VDC supply or battery to the positive input terminal on J1, pin 1. Please refer to the drawing Suggested Wiring.
2. Connect the battery or power supply ground to the ground input terminal
on J1, pin 3.
Setting the Frequency - Without a Meter
3. Connect the engine ground to the common terminal on J2, pin 6.
5. Connect the engine controller input that requires the frequency signal to the normally open output terminal of the terminal block J2, pin 4.
6. Turn the blue potentiometer counter clockwise until the potentiometer clicks softly.
7. Turn on the power. The relay will run slowly. For a cranking application, disconnect the engine itself before attempting this.
8. The number of turns of the potentiometer will be counted from this point, in a clockwise direction.
9. Rotate the potentiometer clockwise until the device that will receive the signals accepts the input. The device could show this by turning on an output, or with a visual indicator.
10. Record the number of turns.
11. Continue to rotate the potentiometer until the device stop accepting the input frequency.
12. Record the number of turns again. Rotate the potentiometer counter clockwise until the potentiometer is in the middle of the two numbers recorded.
13. Record this final middle number of turns for future reference.
A Check the polarity of the input connections. Use a voltage meter to measure the voltages on the screws of the input terminal block J1 to check the connection.
Q The output is not connected to the common when the unit has no power. I need the common connected to the output when the unit is off. How is this changed?
A Move the output wire on the normally open terminal output (pin 5) to the normally closed terminal output (pin 4).
Q The output does nothing. The relay makes an audible clicking sound. What could be wrong?
A Use a voltage meter to measure the voltages on the screws of
the output terminal block J2. Check for a voltage drop across the
output. Alternatively, use an oscilloscope to view the output.
Also, ensure the frequency is set correctly.
Troubleshooting
Q The device that the unit connected to does not respond to the frequency output.
A If the connections are correct (see above), the device may require a pull up resistor as shown in the optional box on the Suggested Wiring drawing. This forces the signal high when the relay is not engaged.
Q There is a device that requires a five volt input. Can the unit be used for this?
A The unit can be used for this application. The output
can have any level of voltage up to 12 VDC.
-Portable frequency generator that runs on a vehicle's power. Used when line voltage (120 Vac) is not available, or regular frequency generators are too large. Please refer to the drawing Frequency Generator.
-Flashing light indicator for a remote alarm or status change. The unit also provides the railroad light type warning effect. Please refer to the drawing Warning Lights Wiring.
-Simulation of contact closure (mechanical relay) outputs from photocells or other devices to inputs that require a contact closure. A photocell measuring speed with the teeth of a gear will provide a frequency based output. This can be simulated when contact closure is needed, without having to connect a relay to a frequency generator. Please refer to the drawing Frequency Generator.
Send
mail to clearly@idirect.com with
questions or comments about this web site.