Proface APL3000B - Node Box PC User Manual
Page 108
Chapter 6 PS-A Monitoring Features
6-7
External Output Signal
The PS-A’s RAS interface connector uses the following output signals.
•
General Purpose Output (DOUT 2 bits)
This general purpose digital output signal provides system condition information to external devices.
The System Monitor property of the control panel or the API-DLL is used by applications to control this signal.
The above mentioned general purpose digital output signals provide system condition information to
external devices.
The System Monitor property can be used to enable or disable any of these output signals.
Rated Load Voltage
DC24V
Maximum Load Current
120mA/point
Maximum Voltage Drop
between Terminals
1.5V (at 100mA load current)
Isolation Method
Via photocoupler
• Be sure to operate the unit within its maximum load current. If the maximum load
current exceeds this range, a malfunction or PS-A damage may occur.
• Design your electrical system by adding the load current and voltage values to the
terminal voltage. If load current value used is large, the voltage drop of 1.5V or less
will occur between the terminals.
• When connecting an induction load, be sure to connect the above drawing’s
protection diode (*1).
•
For connection pin location details,
Cable
(Interface circuits)
+5V
R
PC357
4.7KΩ
SSTA06
DOUT0(-)
DOUT1(-)
DOUT0(+)
DOUT1(+)
SEE