Machine Protection
6-
51
n
Operation
during
Motor
Overheating
Set
the operation if the motor overheats in parameters L1-03 and L1-04. Set the motor temperature input filter
time
parameter in L1-05. If the motor overheats, the OH3 and OH4 error codes will be displayed on the Digi-
tal
Operator.
Error
Codes
If
the
Motor
Overheats
By
setting H3-09 (Multi-function Analog Input Terminal A2 Function Selection) to E (Motor temperature
input),
you can detect alarm OH3 or OH4 using the PTC temperature-resistance characteristics, and protect the
motor.
The terminal connections are shown in the following diagram.
Fig 6.41 Mutual Connections During Motor Overheating Protection
K
K
K
K
Limiting
Motor
Rotation
Direction
If
you set motor reverse rotation prohibited, a reverse run command will not be accepted even if it is input.
Use
this setting for applications in which reverse motor rotation can cause problems (e.g., fans, pumps, etc.)
n
Related
Parameters
* Can
be set only for (-E)) model. Disabled for V/f with PG.
Error
Code
Details
OH3
Inverter
stops or continues to operate, according to the setting in L1-03.
OH4
Inverter
stops according to the setting in L1-04.
Param-
eter
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control
Methods
V/f
V/f
with
PG
Open
Loop
Vec-
tor
LCD
Display
b1-04
Prohibition
of reverse
operation
0:
Reverse enabled
1:
Reverse disabled
2:
Switch phase order (reverse enabled)*
0
or 1
(0
to 2)*
0
No
A
A
A
Reverse
Oper
M3
M4
M6
M5
Inverter
Multi-function
contact input
Branch resistance
18 k
Ω
PTC thermistor
Multi-function
contact output
Fault contact
output
Multi-function
PHC output
Note:The portion in dotted lines
can also be as follows:
Multi-
function
contact
outputs
Содержание SYSDRIVE 3G3RV
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