User`s manual

6-65
6
Multi-function Digital Inputs (H1-01 to H1-05)
Timing Chart
The timing chart when using a baseblock command is shown in Fig 6.66.
Fig 6.66 Baseblock Commands
 OH2 (Overheat) Alarm Signal Input
If a digital input is programmed for this function (H1-=B) an OH2 alarm message can be displayed on the
display by turning this input to ON. The fault contact will not be operated.
 Multifunction Analog Input A2 Disable/Enable
If a digital input is programmed for this function (H1-=C) the analog input A2 can be enabled or disabled
by switching the digital input ON/OFF (ON – Analog Input A2 enabled).
Set
Value
Function
Control Methods
V/f
V/f
with
PG
Open
Loop
Vector
Closed
Loop
Vector
8 External baseblock NO (Normally Open contact: Baseblock when ON) Yes Yes Yes Yes
9 External baseblock NC (Normally Closed contact: Baseblock when OFF) Yes Yes Yes Yes
IMPORTANT
When a contactor between inverter and motor is used, always perform a base block command before
opening the contactor.
Set
Value
Function
Control Methods
V/f
V/f
with
PG
Open
Loop
Vector
Closed
Loop
Vector
B OH2 Alarm input (ON: OH2 is displayed) Yes Yes Yes Yes
Set
Value
Function
Control Methods
V/f
V/f
with
PG
Open
Loop
Vector
Closed
Loop
Vector
C Analog Input A2 enable/disable (ON: Enable) Yes Yes Yes Yes
Forward operation/Stop
Baseblock command
Input
Cleared
Frequency reference
Output frequency
Coast to a stop
Speed search or operation with the previous
frequency reference