UT-10 & UT-20
One Shot
Upon application of a trip signal, the output
contacts transfer and the time delay begins. After
the delay period the contacts return to their
original position.
+
0
TRIP
OUTPUT
DELAY
DELAY
POSITIVE
TRIP
TRIP
NEGATIVE
Dual Delay
Dual Delay is a combination of Delayed Operate
and Delayed Release. Upon application of a trip
signal, the time delay begins. At the end of the
time delay, the output contacts transfer and hold.
Upon removal of the trip signal, the time delay
begins again. After the delay period, the output
contacts return to their original position.
DELAY
DELAY
+
0
TRIP
OUTPUT
Delayed Operate
Upon application of a trip signal the time delay
begins. At the end of the time delay the output
contacts transfer and hold until the trip signal is
removed. The trip signal MUST remain for the
entire length of the delay for the contacts to
transfer. Removal of the trip signal prior to
time-out will cancel the operation of the timer.
+
0
TRIP
OUTPUT
DELAY
POSITIVE
TRIP
TRIP
NEGATIVE
DELAY
Delayed Release
Upon application of a trip signal, the output
contacts transfer. The time delay begins upon
REMOVAL of the trip signal. After the delay
period, the output contacts return to their original
position. Re-application of a trip signal during
timing will extend the delay.
DELAY
+
0
TRIP
OUTPUT
UT-20 Only
Double Pulse
Double Pulse is defined as a one-shot with
adjustable pulses (P) at each end. Upon
application of a trip signal, the output contacts
will transfer for a period determined by the
Pulse Width Potentiometer (0 to 220 sec.). At
the end of the programmed delay, the output
contacts transfer again for the period already
determine by the Pulse Width Potentiometer.
+
0
TRIP
OUTPUT
DELAY
P
P
0
TRIP
OUTPUT
DELAY
P
P
+
Note:
The programmed delay is determined by the
combination of the Base Time Potentiometer
and the Time Set switches. See the timing
adjustment paragraph for more information.
Delayed Pulse
Upon application of a trip signal, the
programmed delay begins. After the
programmed delay period, the output contacts
transfer for a period of time (P) determined by
the Pulse Width Potentiometer.
+
0
TRIP
OUTPUT
DELAY
P
0
TRIP
OUTPUT
DELAY
P
+
AlarmSaf 65A Industrial Way Wilmington, MA 01887-3499 (978) 658-6717 FAX: (978) 658-8638 Web Site: www.alarmsaf.com
Time Set Instructions (continued)
The base time is multiplied by the total value of the time set switches to arrive at the desired delay time. The time set
switches can be combined to form any integer value from 1 to 31. The time delay equals the Base Time multiplied by
the total value of the time set switches.
Timing Formula
The following formulas can be used to calculate the Base Time pot and switch settings:
BASE TIME
X
TOTAL SWITCH VALUE
=
DESIRED DELAY TIME
(Set by Potentiometer)
(Set by Time Set Switches)
Therefore, to set the TOTAL SWITCH VALUE for a particular delay time:
TOTAL SWITCH VALUE
=
DESIRED DELAY TIME
/
BASE TIME
Timing Example
The desired delay time is 60 seconds. Set the time set switches to a value of 1 in order to set the base time. This
corresponds to S1-1 ON, S1-2 through S1-5 OFF. Now adjust the Base Time Potentiometer (BTP) for the selected
delay (see Timing Formula). In this case, a base time of 6 seconds and multiplier (switch value) of 10 was selected, so
the BTP should be set for 6 seconds. Now change the time set switches to a value of 10. This corresponds to S1-1, S1-3
and S1-5 OFF; S1-2 and S1-4 ON. The timer is now set for a delay of 60 seconds.
Sample Chart for Delay Times
On
On
On
On
On
31
20 X
620 =
Off
On
Off
On
Off
10
6 X
60 =
Off
On
Off
Off
On
9
6 X
54 =
Off
On
Off
Off
Off
8
6 X
48 =
Off
Off
On
On
On
7
6 X
42 =
Off
Off
On
On
Off
6
6 X
36 =
Off
Off
On
Off
On
5
6 X
30 =
Off
Off
Off
On
Off
2
12 X
24 =
Off
Off
Off
Off
On
1
18 X
18 =
Off
Off
Off
Off
On
1
12 X
12 =
Off
Off
Off
Off
On
1
6 X
6 =
(16)
(8)
(4)
(2)
(1)
S1-5
S1-4
S1-3
S1-2
S1-1
Total
Switch
Value
Base Time
(Seconds)
Desired
Time
(Seconds)
Timing Formula
Time Set Switches (Values)
Troubleshooting Guide
v
No Relay Operation
}
Verify that the correct input voltage is applied at terminals #1 and #2
}
Verify that the correct jumpers are cut for the applied input voltage
}
Test relay by setting up timer as a ONE-SHOT - set for minimum delay
}
Verify relay transfer by checking output terminals with an ohmmeter
v
Improper Relay Operation
}
Verify that the proper switch settings have been selected
v
For Further Assistance
}
Call the AlarmSaf Technical Assistance Department
