Fuji Electric FRENIC-HVAC User Manual page 548

J521 External PID Control 1 (Alarm output selection)
J522
J524
J521/J522/J524, J621/J622/J624, J671/J672/J674 define two types of alarm signals
(absolute-value and deviation alarms) that the inverter can output for external PID control 1,
2 or 3, respectively.
To use the alarm output, it is necessary to assign EPV1-ALM, EPV2-ALM or EPV3-ALM to
any of digital output terminals as duty control output with any of E20 to E24 and E27. To
generate a light alarm, the following digital output signals can be extracted without setting the
light alarm selection 4 (H184). For details of light alarms, see the description of function
codes H181 to H184.
- External PID control 1: EPV1-ALM (E20 to E24 and E27, data = 214)
- External PID control 2: EPV2-ALM (E20 to E24 and E27, data = 224)
- External PID control 3: EPV3-ALM (E20 to E24 and E27, data = 234)
J521/J621/J671 specifies the alarm output types. J522/J622/J672 and J524/J624/J674 specify
the upper and lower limits for alarms, respectively.
 PID control 1 to 3 (Alarm output selection) (J521, J621, J671)
J521/J621/J671 specifies one of the following alarms available.
Data for
J521/J621/J671
0
1
2
3
4
(Upper level alarm (AH))
(Lower level alarm (AL))
J621 (External PID Control 2 (Alarm output selection))
J622 (External PID Control 2 (Upper level alarm (AH))
J624 (External PID Control 2 (Lower level alarm (AL))
J671 (External PID Control 3 (Alarm output selection))
J672 (External PID Control 3 (Upper level alarm (AH))
J674 (External PID Control 3 (Lower level alarm (AL))
Alarm
Absolute-value alarm While PV < AL or AH < PV, EPV1-ALM is ON.
(PV)
Absolute-value alarm Same as above (with Hold)
(PV) (with Hold)
Absolute-value alarm Same as above (with Latch)
(PV) (with Latch)
Absolute-value alarm Same as above (with Hold and Latch)
(PV) (with Hold and
Latch)
Deviation alarm (PV) While PV < SV - AL or SV + AH < PV,
EPV1-ALM is ON.
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Description