Control Levels - Eaton Holec Clink II User Manual

CLINK II SCU MANAGER
5.5.1

Control levels

Within the Clink-system three control levels and ways of control are distinguished, see figure 6:
1 Process control level: controlled via DeviceNet
2 Switchgear level:
3 Field level:
DeviceNet
At the highest level, motor control takes place by means of a Distributed Control System (DCS), a
Programmable Logic Controller (PLC) or a Supervisory Control And Data Acquisition system (SCADA). In this
manual all controlling systems are indicated as process controller. From a process controller it is possible to
switch motors on and off.
Via LCU-5 it is possible to configure the starter logic operation (see 5.6 on page 32) and the automatic restart
function (see 5.7 on page 40). In order to configure the automatic restart function select:
Control - Settings - tab Restart
Digital inputs
At the second level, motor control takes place by means of:
• Operation buttons on the motor starter tray. With these buttons start1, start2 and stop commands can be
given which are processed by the Starter Control Unit.
• Digital inputs, for the use of digital inputs see 5.3.1 on page 25.
functional description scu
Process control level
DCS
Switchgear
level
CIU 1
DeviceNet
S S
C C
U U
M
RCU
Field level
Figure 6: Control levels within a typical configuration
controlled via Digital inputs
controlled via hard wired circuits
.
Monitoring, maintenance &
engineering
SCADA EWS
LCU
CIU 2
S F F F
C C C C
U U U U
feeder/
incomer
version 5.0
SCU Manager - Motor
30