Mitsubishi Electric NZ2GF12A4-16D User Manual page 96

Short-circuit detection per output channel
A short circuit of an output signal is detected in each of output channels.
■Operation overview
A short circuit is detected when the output current of an output signal exceeds the judgment value.
■Judgment value for short-circuit detection
An output current is 6.5A or more (judged by each output signal).
■Notification of a detected short-circuit
When a short circuit is detected in an output signal, the following operation is performed.
• The LED corresponding to the output signal turns on in red.
• The corresponding bit of Output Y channel status (RWr5)
Ex.
Short-circuit detection in the port for Y8 and Y9 outputs of the NZ2GF12A2-16T
Load
Load
Pin number
(1)
(2)
(3)
(4)
(5)
For example, when a short circuit is detected in Y8, the Y8 LED turns on in red. The bit 8 (CS8) of Output Y channel status
(RWr5) turns on.
■When a short circuit is eliminated
When a short circuit in an output signal is eliminated, the following operation is performed.
• The LED corresponding to the output signal turns on in green.
• The corresponding bit of Output Y channel status (RWr5)
*1 For details, refer to the following.
Page 149 Output Y channel status
8 FUNCTIONS
94
8.9 Short-Circuit Detection Function
NZ2GF12A2-16T(Y8, Y9 output port)
(1)
Checking for
(4)
short circuits
Checking for
short circuits
*1
turns on.
(2)
(3)
(5)
Signal name
+24V (LOAD)
Y9
Empty
Y8
FG
*1
turns off.