YOKOGAWA ADMAG TI Series - A2.6 Reset Processing

<Appendix 2. Integrator (It) Block>
249
IM 01E21A02-03EN
A2.6 Reset Processing
A2.6.1 Reset Trigger
Therearethefollowingvetypesofresettriggers:
(1) AnintegratedvalueexceedsTOTAL_SP.
(2) Anintegratedvaluefallsbelow“0”.
(3) RESET_INis“H”.
(4) EveryperiodspeciedinCLOCK_PER.
(5) OP_CMD_INTis1.
The table shows the correlation between INTEG_TYPE and RESET triggers.
(1) (2) (3) (4) (5)
1:UP_AUTO ◦ x ◦ x ◦
2:UP_DEM x x ◦ x ◦
3:DN_AUTO x ◦ ◦ x ◦
4:DN_DEMO x x ◦ x ◦
5:PERIODIC x x x ◦ ◦
6:DEMAND x x ◦ x ◦
7:PER&DEM x x ◦ ◦ ◦
WhenOP_CMD_INThasbecome“H”andaresetwasexecuted,OP_CMD_INTautomatically
returnsto“L”.
EvenifRESER_INbecomes“H”,executingRESET,RESET_INdoesnotautomaticallyreturnto
“L”.TheRESET_INsettingwillnotberetainedifthepoweristurnedOFF.
A2.6.2 Reset Timing
All items are reset during the execution of the function block. Therefore, the minimum period of a
reset is the block execution period.
z 5-second rule
If a reset is made, the next reset will not be accepted for 5 seconds after that.
EvenifUP_AUTO(orDN_AUTO)isactivatedandTOTAL_SP(or0)isreachedwithin5seconds,
the next reset will not be made for 5 seconds from the previous reset.
z CLOCK_PER
IfINTEG_TYPEisPERIODIC(5)orPER&DEM(7),aresetismadeattheperiod(sec)settothe
CLOCK_PERparameter.
IfthevalueinCLOCK_PERissmallerthanthefunctionblock’sexecutionperiod,bit1of
BLOCK_ERR“BlockCongurationError”isset.