![background image](http://html1.mh-extra.com/html/m-system/tc10em/tc10em_instruction-manual_3132373022.webp)
TC10EM
P. 22 / 43
EM-9581-B Rev.1
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
• ALARM HIGH SETPOINT / ALARM LOW SETPOINT
Multiple setpoint values can be specified by using banks. Refer to ‘BANK’ section for assigned addresses.
For the deviation alarm, specify offset values from the SP (positive value for a temperature value greater than the SP, nega-
tive value for one smaller).
For the absolute value alarm, specify absolute temperature values.
• ALARM HYSTERESIS
Hysteresis, a deadband between ON point and OFF point, is used to prevent frequent ON/OFF operations (generally called
‘chattering’) of an alarm output device when the PV fluctuates around the setpoint.
ADDRESS
PARAMETER
RANGE
DEFAULT
322
Loop 1, Alarm 1 hysteresis
0.0 to 999.9
(decimal by input 1 decimal setting)
0.0
330
Loop 1, Alarm 2 hysteresis
338
Loop 1, Alarm 3 hysteresis
578
Loop 2, Alarm 1 hysteresis
0.0 to 999.9
(decimal by input 2 decimal setting)
586
Loop 2, Alarm 2 hysteresis
594
Loop 2, Alarm 3 hysteresis
• ALARM LATCHING
Once an alarm is tripped, it is held even when the alarm condition is cancelled.
Latched alarm is reset by turning the device’s power supply off or by Modbus command.
ADDRESS
PARAMETER
RANGE
DEFAULT
323
Loop 1, Alarm 1 latching
0 : Disable
1 : Enable
0
331
Loop 1, Alarm 2 latching
339
Loop 1, Alarm 3 latching
579
Loop 2, Alarm 1 latching
587
Loop 2, Alarm 2 latching
595
Loop 2, Alarm 3 latching
• ALARM ON DELAY / ALARM OFF DELAY
Alarm ON delay time is applied to the time during which an alarm condition should remain true, before the alarm trips.
Alarm OFF delay time is applied to the time during which an alarm conditions should remain false, before the tripped alarm
is reset.
Setting 0 means no delay in the alarm operations.
ADDRESS
PARAMETER
RANGE
DEFAULT
324
Loop 1, Alarm 1 ON delay
0 to 999 seconds
0
332
Loop 1, Alarm 2 ON delay
340
Loop 1, Alarm 3 ON delay
580
Loop 2, Alarm 1 ON delay
588
Loop 2, Alarm 2 ON delay
596
Loop 2, Alarm 3 ON delay
325
Loop 1, Alarm 1 OFF delay
333
Loop 1, Alarm 2 OFF delay
341
Loop 1, Alarm 3 OFF delay
581
Loop 2, Alarm 1 OFF delay
589
Loop 2, Alarm 2 OFF delay
597
Loop 2, Alarm 3 OFF delay
alarm hysteresis
alarm hysteresis
alarm ON
alarm OFF
alarm Lo limit
alarm Hi limit