Phonetics SENSAPHONE 1100 Owner's Manual page 10

®
Sensaphone Model 1100 Instruction Manual
An alert input can be used with any normally open (NO.) or normally
closed (NC.) device. Open is when there is no contact and closed is
when a contact exists. The Model 1100 will adapt to NO. or NC. sensors
when the unit's ID number is programmed (see Chapter 3, page 21 or
Chapter 4, page 26). You must determine what type of sensor will be
connected to each alert input.
NOTE: Before wiring, it is advisable to disable the input to
prevent accidentally tripping an alarm. See Chapter 4, page 25
After you have selected the sensor, loosen the screw of the alert input
and a ground. Two wire leads are used to connect any monitoring sensor.
Fasten one lead to the numbered screw (1, 2, 3, or AUX) and the other
lead to GND. Tighten both screws. See figure 6. If the input was not
disabled, the Model 1100 may recite its "Alert Condition exists" message
as you connect the sensor. If it does, just press any key to stop it. Re-
enable the input after wiring. See figure 6 for a diagram on connecting a
sensor to an alert input.
Figure 6: Connecting a sensor to an alert input
Any NO, or N.C. sensor can be attached to the Model 1100 using 22-
gauge wire. The sensor can be several hundred feet from the unit, as
long as the total resistance of the circuit is not greater than 50 ohms. Use
8
TMP GND
AUX
1
2 3
Figure 5: Alert inputs
TMP GND
AUX
1
2 3
GND GND
#1
4
5 6
GND GND
#1
4
5 6
ALERT
#2 #3
7 8
ALERT
#2 #3
7 8