14
SV
PV
ON OFF
OUT 6-7
ONOFF
OUT
Lit
hysteresis
EXCEEDED Indicator
RESET Indicator
POWER OFF
POWER ON
LitUnlit
Unlit
Unlit
Unlit
SV
PV
ON OFF
OUT 6-7
ONOFF
OUT
POWER ON
POWER OFF
EXCEEDED Indicator
hysteresis
RESET Indicator
Unlit
Lit Unlit
UnlitUnlit
Lit
7. Action explanation
7.1 High limit control action (Fig. 7.1-1)
Auto start will be used for purposes of explanation of the High limit control action. (Refer to Section 7.3)
(Fig. 7.1-1)
(1) Limit control action will initiate after power supply to the controller is turned on.
(2) If PV exceeds SV, the EXCEEDED and RESET indicators light, and
OUT (Limit control output terminals between 6-7) is turned OFF.
(3) If PV drops below [SV-OUT hysteresis], the EXCEEDED indicator goes off.
At this time, the RESET indicator is lit, and OUT (Limit control output terminals between 6-7) is in OFF status.
(4) If the
key is pressed, or if External reset input terminals between 13-14 are shorted, the RESET
indicator goes off, OUT (Limit control output terminals between 6-7) is turned ON, and limit control
action initiates again.
(5) While the EXCEEDED indicator is lit, even if the
key is pressed or if External reset input terminals
between 13-14 are shorted, limit control action does not initiate.
7.2 Low limit control action (Fig. 7.2-1)
Auto start will be used for purposes of explanation of the Low limit control action. (Refer to Section 7.3)
(Fig. 7.2-1)
(1)
key or External
reset input
(2)
(3)
(4)
(5)
(1)
(2) (3)
(4)
(5)
key or External
reset input