2
Step 3:
x
At the
control panel
measure the DC voltage between the 0 Volt Bell Hold off connection, and
the Bell Trigger output connection. If the measured DC voltage is 12 Volts or above, then fit a
1K resistor between the 0 Volt Bell Hold off connection and the Bell Trigger output connection.
Now move to
STEP 4.
If the measured DC voltage is 0 Volts then move straight to
STEP 7
.
Step 4:
x
At the control panel measure the DC voltage across the 1K resistor which has been inserted
between the 0 Volt Bell Hold off connection and the Bell Trigger output connection . The
measured DC voltage reading will be close to the readings shown in the table below.
APPROXIMATE MEASURED VOLTAGE
REQUIRED MONITORING RESISTOR
6.8 Volts
470 ohms
4.5 Volts
1K
4.2 Volts
1K
3.4 Volts
No resistor required
3.1 Volts
No resistor required
2.3 Volts
No resistor required
0 Volts
See STEP 7
Step 5:
x
At the control panel remove the 1k resistor from the 0 Volt Bell Hold off connection and the
Bell Trigger output connection. Replace the 1k resistor with the chosen value of resistor from
the table above. Insert and screw down the Bell Trigger wire into the control panel Bell output
connection. Make a final measurement of the DC Voltage at the
Invincibell
between the 0 Volt
Bell Hold off connection and the Bell Trigger output, the Bell Trigger Monitor voltage will read
between 1.6 Volts and 3.0 Volts DC.
BELL TRIGGER OUTPUT
CONTROL PANEL
0V HOLD OFF NEGATIVE
BELL TRIGGER OUTPUT
CONTROL PANEL
0V HOLD OFF NEGATIVE
13.0V
1
K
BELL
-
+
12v
INVINCIBELL
1.6V-3.0V
