Characteristics Of Protection Functions; Read-Out Of Trip And Warning Signals - Eaton Holec Clink II User Manual

CLINK II SCU MANAGER
• Under voltage protection: see 5.8.12 on page 53
• Under current protection: see 5.8.13 on page 54
5.8.1

Characteristics of protection functions

• Each protection function has an input for a variable to be observed and inputs for setpoints which are set
via LCU-5 by selecting:
• After having been configured, each protection function is performed autonomously by the Starter Control
Unit.
• Each protection function has the facility to generate a trip signal to switch off the motor in the event that
one of the setpoints is exceeded.
• Each protection function (except motor stall) has the facility to generate a warning signal in the event that
one of the setpoints is exceeded.
• Setpoints are used to define which trip and warning signals can be acknowledged via manual control or
process control.
The status of a protection function can be read-out via LCU-5, by the process controller and on the motor starter
tray.
Protection states:
• Fault not present.
• Protection activated, message not yet confirmed by an acknowledge/reset command.
• Message acknowledged but fault is still present.
5.8.2

Read-out of trip and warning signals

Via LCU-5 and the process controller the following statuses can be read-out (see also table 31):
• Trip Status indicates which protection has been activated.
• Trip Acknowledge Status indicates which protection has been activated and also has been confirmed by
means of an acknowledge command.
• Warning Status indicates which protection gives a warning signal.
• Warning Acknowledge Status indicates which protection gives a warning signal and also has been con-
firmed by means of an acknowledge command.
Name
Trip Status
Trip Acknowledge Status
functional description scu
SCU Manager - Module Protection - Settings
Table 31: Read-out of protection status registers
Description
Motor stall
Motor Overload
Phase Unbalance
Earth Leakage
Process Overload
Process Underload
External Protection
Over Voltage Protection
Under Voltage Protection
Under Current Protection
See description Trip Status
(above)
.
Parameter
type
Actual
Actual
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