Digital Multicircuit Protector S8M 17
■ Alarm Display
The S8M displays alarms according to the parameters set in Setting
Mode. The alarm number and detected value are alternated on the
display for each alarm.
Example: Abnormal Current Tripping Alarm
Note: Alarms will be displayed in order of priority if more than one
alarm occurs at the same time.
Order of priority: A10, A11, A20, A21, A22, A23, A30.
■ Resetting Alarms
When an alarm is displayed, remove the cause of the alarm and then
press the Reset Key ( ) for at least 3 s. The following display will
appear and the alarm will be reset.
Note: The over-temperature output will automatically be reset when
the temperature drops below the set value. All other alarms
must be reset manually.
■ Communications
(S8M-CP04-R/ CP04-RS)
The built-in RS-232C port can be used to connect special Support
Tool to set parameters, monitor, perform tripping operations for
branch outputs, and perform other remote monitoring and control
operations from a network.
■ Support Tool
(S8M-CP04-R/ CP04-RS)
The Support Tool is used to set and monitor models that support
communications. Parameters can be set, operation can be
monitored, and parameter files can be managed.
Support Tool Functions
• Reading and writing parameter settings
• Monitoring present values
• Monitoring status (cutoff status, normal/error status)
Applicable OS: Windows 2000 or XP
Visit OMRON's website for downloading the Support Tool.
Nothing displayed
Current when alarm occurred
1234VAkh°Cs 1234VAkh°Cs
1234VAkh°Cs
0.5 s
0.5 s
0.5 s 0.5 s
Note: Indicator Status Notation
: Lit : Flashing
To Run Mode
Run Mode is returned to automatically when the alarm is reset.
Refer to List of Alarms on page 16 for recovery/resetting
methods.
Type RS-232C
Communications method Half-duplex
Sync method Start-stop
Baud rate 4,800 or 9,600 bps
Transmitted code ASCII
Data bit length 7 or 8 bits
Stop bit length 1 or 2 bits
Error detection Vertical parity and BCC
Parity check None, even, or odd
Protocol CompoWay/F
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