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Local control
Local control means the control operation from the relay front panel (MIMIC panel). In local
control the device to control can be selected using cursor keys and press SELECT key to fix the
object, then press
or
Control right
selection
L/R
Figure 2.6.5
At pressed SELECT key GRD150 checks control right, operation lock, device status, and so on
to the selected device. If the select operation is valid, then the object symbol reverses and displays
a guidance 'Object fixed...'. If the select operation is invalid, then display guidance of the factor
as shown in Table 2.6.3. Press ENTER key to delete the error guidance.
Guidance message
−
OPEN interlock failed
CLOSE interlock failed
EARTH interlock failed
FREE interlock failed
Control right failed
Synchronisation not established
Under control blocking
No response returned
Pallet undefined
Under double command blocking
− (status unchanged)
At pressed
or
synchronous. If control the open operation to the device of open status, it is mistake and GRD150
cancels the selected status.
More than 60 seconds passed until pressed
status.
Remote control
Remote control means the control operation from remote control center via communication. It can
be provided for both direct operation control and select & operation control. The object mapping,
response of control and events, etc. depend on the communication protocol such as
IEC60870-5-103, etc.. See communication profile about them.
PLC function
PLC control means the control operation signal assigned by PLC function. It is valid both local
and remote. PLC control function is provided for automatic control, control by the switch of other
local control panel, etc. Any control logics can be programmed by PLC function. Table 2.6.4
shows a sample of control logic by PLC.
key to output control signal.
Object device
Fix the Object
selection
,
SELECT
Key Operation for Local Control
Table 2.6.3 Guidance Message
Device selection is completed, or the device has responded.
No response of device
During the device response or defining the device
key GRD150 checks interlock condition, control direction and
or
⎯
⎯
110
Control operation
,
Notes
key , then GRD150 cancels the selected
6 F 2 S 0 8 4 2
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