Hitachi X200 Series - Manual (Page 190)

Network Detection Signal (FieldBus Option)
The Network Detection Signal output indicates the general status of network
communications when using a FieldBus option. The inverter has a programmable
watchdog timer to monitor network activity. Parameter P044 sets the time-out period. If
communications stop or pause longer than the specified time-out period, the ODc output
turns ON.
Option
Code
Terminal
Symbol
Function Name State Description
ON when the communication watchdog timer (period
specified by P044) has timed out.
10 ODc Network
Disconnection
Signal
(Option module)
OFF when the communication watchdog timer is
satisfied by regular communications activity
Valid for inputs: 11, AL0 – AL2
Required settings P044, P045
Notes:
• To disable the communications watchdog timer,
set P044=00.00 sec.
Example for terminal [11] (default output
configuration shown – see
page 3-54 ):
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration – see
page 4-35 and 3-54 ):
See I/O specs on page 4-6
RY
Inverter output
terminal circuit
CM2 11
ODc
AL1
Power
supply
Load
AL0 AL2
Inverter logic
circuit board ODc
4−51
Inverter Mountin
g
and i
n
st
all
a
tion