User manual

Publication 1760-UM001A-EN-P
7-12 Retention
Single-Pulse Timing Relays, Retentive
Single-pulse timing relays are suitable for metering adhesives, liquids etc.
Task: A lubricating device is to always dispense the same quantity of oil.
Contacts and relays used:
Signal diagram:
U = Supply voltage
Range A: In this case the power is interrupted. When power is restored, the output
stays on for the remaining time.
Range B: The time period expires without interruption.
Coil Function
I1 Start lubrication
Q1 Oil valve
T8 Oil time
30.00
TRG
RES
T8
+
{
S
I1---------TT8
T8---------{Q1
Circuit Diagram:
Parameters entered:
U
I1
T8
t
1
t
2
Q1
t
A
B
t +
1
t = 30 s
2