KSB EA-C, Installation & Operating Manual, Page: 23 / 44

6 Commissioning/Start-up/Shutdown
23 of 44
EA-C
6 Commissioning/Start-up/Shutdown
6.1 Prerequisites for commissioning/start-up
NOTE
Do not operate the actuator electrically before it has been mounted onto a valve.
Before commissioning/starting up the drive, make sure that the following conditions
are met:
▪ Check that the actuator has been properly installed and aligned
(
ð Section 4.5, Page 12) .
▪ Make sure that the operating conditions correspond to the data specified and
those provided on the name plate.
▪ All fastening bolts, connecting elements, and electrical connections have been
properly tightened to the specified tightening torques.
▪
Implement all measures preventing accidental contact with moving and live
parts.
6.2 Commissioning/Start-up
6.2.1 Automatic commissioning of continuous-action and 24 V AC/DC 3-point
actuators
The actuator is delivered in "initialised" mode and the green LED is lit. In this mode
the actuator responds to the setpoint supplied or to other operating commands.
If the actuator has been replaced, automatic commissioning must be performed.
Power supply must not be interrupted during commissioning.
If the actuator stroke is blocked during commissioning before the actuator has
reached a set stroke-dependent limit position, the value reached will be saved.
If no torque limit is found during commissioning, or the stroke determined is below
the permissible minimum stroke of 5 mm, commissioning is aborted. The actuator
returns to the "non-initialised" state, which is indicated by the green LED flashing
slowly. This will also happen if the actuator has not been initialised correctly.
1 2
3
Fig. 23: Commissioning button and LEDs
1 Commissioning button 2 Green LED
3 Red LED
ü Check whether the terminal box cover or the actuator cover needs to be
dismantled, see the selection table. (
ð Section 5.2, Page 13)
1. Dismantle the terminal box cover or the actuator cover, depending on the
design. ( ð Section 5.4, Page 16)
2. Press and hold the commissioning button (1) inside the terminal box for 3
seconds.
3. The initialisation process starts, the green LED (2) flashes and the actuator
completes a full cycle between the set limit positions.