User manual

Publication 1760-UM001A-EN-P
Drawing a Circuit Diagram with Pico 4-19
If the actual and setpoint values are the same, the timing relay switches the warning
light on and off every 2 seconds.
Doubling the flashing frequency:
• Select T1 in the power flow display and change the
setpoint time to 01.00.
When you press Ok, the warning light flashes at twice the
frequency.
Protecting Timer and Counter Settings
You can also modify parameter settings via the PARAMETER menu option. If you
want to prevent other people from modifying the parameters, change the access
enable symbol from “+” to “-” when creating the circuit diagram and protect the
circuit diagram with a password.
Timing Relays
Pico provides eight different timing relays T1 to T8.
A timing relay is used to change the switching duration and the make and break
times of a relay contact. The possible delay times range between 10 ms and 100
hours.
Programming a Timing Relay
A timing relay is integrated into your circuit in the form of a contact. The function
of the relay is defined via the parameter display. The relay is started via the trigger
input TRG and can be reset via the reset input RES. A timer also resets when it is
turned off. To prevent unpredictable switching states, use each coil of a relay once
only in the circuit diagram.
01.00
TRG
RES
T1
+
{
S
01.23