MG 47 Series - Page 61

6147LHZ EM-9517-B Rev.10
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
IMPORTANT
• When indication ‘S.ERR’ and ‘Min’ indicator blink, all the low alarm outputs are provided. When indication ‘S.ERR’ and
‘Max’ indicator blink, all the high alarm outputs are provided.
• When indication ‘-19999’ blinks, all the low alarm outputs are provided. When ‘19999’ blinks, all the high alarm outputs
are provided.
• The alarm point, trip action, ON delay time and coil at alarm are reset to the default values and all alarm setpoints are
disabled (reset to ‘----’ status) when the input type has been changed.
• The trip action, ON delay time and coil at alarm are reset to the default values when the alarm point has been changed.
The current setpoints are held when quad alarm is changed to dual alarm. The current L and H setpoints are held but
the LL and HH setpoints are returned to the previously set values when dual alarm is changed to quad alarm. However
when a current setpoint is ‘----’, it is returned to the previous one in any case.
NOTE
• Alarm Setting Mode is locked with the alarm output code ‘0’ no-alarm-output type.
• Alarm point is xed at ‘2’ when the alarm output code ‘2’ is specied.
In order to provide an alarm output at power OFF and at
alarm, set “coil de-energized” and use the N.C. terminal.
Figure 5: Coil at alarm
■
Alarm Output Code ‘1’ (N.O. relay contact, 4 points) ■ Alarm Output Code ‘2’ (SPDT relay contact, 2 points)
In order to stop operation of equipment when the display
value exceeds the setpoint, for instance, set reversal output
logic (N.C.), “coil de-energized”.
Display value
Alarm setpoint
Alarm output
(coil energized)
Alarm output
(coil de-energized)
Alarm setpoint
Display value
Alarm output
(coil energized)
(N.O.)
(N.C.)
Alarm output
(coil de-energized)
(N.O.)
(N.C.)
Power