CLINK II SCU MANAGER
functional description scu
version 5.0
32
5.5.3
Interlockings
Lock/unlock control is possible via:
•
Manual control:
via digital inputs
•
Local control:
via LCU-5. Select
SCU Manager - Module Interlock
•
Process control: via DeviceNet. See table 24.
The External Interlock (Digital Input) (5.3.1 on page 25) can be used to lock the Manual control or Process and
Local control.
The interlock status can be read-out via LCU-5. Select:
SCU Manager - Module Interlock.
5.6
Starter logic
This paragraph describes the starter logic by means of a number of time diagrams. For each starter type it is
described, for the various transition states, how switching from one operating state to the other takes place.
5.6.1
Tray in Test state
In normal operational state a contactor can only be switched when the isolator is closed. Purpose of the Tray
in Test state is make the test possible of the auxiliary circuit and all messages without starting a motor. To
activate the ‘Tray in test’ mode the push button / switch in the motor tray has to be closed. This can only be
done when the door of the motor starter tray is open and thus the isolator is in the off position.The contact of
the ‘Tray in test’ push button / switch simulates a closed contact of the isolator and thus the contactor can be
controlled either manually or by Clink.
5.6.2
Drive type
The drive type can be set via LCU-5, see table 25. Select:
SCU Manager - Unit Properties - tab Nominal
.
Table 24: Setpoint lock/unlock (command object)
Name
Description
Parameter
type
Lock
manual control
local control
process control
Setpoint
Unlock
see lock
Setpoint
Table 25: Setpoint Drive Type
Name
Description
Parameter
type
Drive Type
Direct-on-Line 1 phase
Direct-on-Line 3 phase
Star-Delta
Forward-Reverse
Dual Speed
Setpoint
