SIREC D Display Recorder 7ND4000

Programming
4.9 DIGITAL I/O
The Digital I/O (Relay Outputs, Optocoupled inputs)
option must be fitted in order for the following to
work. If you do not have the option fitted you should
ensure that all inputs are programmed off.
To turn event messages off set the message to “”
(null). The Digital I/O menu selection in the Program
Menu, allows you to select what type of signal
opens the output contacts and what function the
input signals will perform. You can also program
custom event messages. The following
programming options are available from the Digital
I/O Menu:
• Contacts Out - Allows you to select what type
of event controls the Contact Out relays.
• Switches In - Allows you to select a Function
for the switch to activate.
• Event msgs -Allows you to enter custom
messages for events.
4.9.1 Contacts Out. This menu contains
four options as follows:
• Alarms clear - Opens the Contacts Out when
the alarms are cleared (default), else they
remain latched.
• ACK key - Opens the Contacts Out when the
ACKnowledge Key is pressed.
• Failsafe - Allows the Contacts Out to function
as Failsafe Contacts. Reverses the logic so a
contact will be energized to the normal
condition. This will drop out in the event of a
power failure and indicate an alarm.
• Reflash - Programs the Contacts Out to
momentarily open and re-close each time an
additional alarm is acquired, which is
programmed to close the contacts.
A. Invoking Contacts Out Menu Item - To
program the Contacts out, use the UP (↑) or DOWN
(↓) Arrow Keys to highlight “Contact outs". Press
ENTER to invoke the Contact Outs Menu and the
following options are available.
4-52
B. Alarms Clear - Program Alarm Clear as
follows:
1. Use the UP (↑) or DOWN (↓) Arrow Keys to
highlight “Alarms clear" and press ENTER. The
display will read either "opn clr=NO"' or "opn
clr=YES" (default).
2. Use the YES or NO key to select whether the
contact outs should open when the alarms are
cleared, "opn clr=YES” or not open, "opn clr=NO".
When the desired selection is displayed, press
ENTER and the display returns to the "Alarms
clear" menu item.
NOTE
To make the outputs latching, set Alarms
Clear to NO and ACK key to yes.
C. ACK Key - Program the ACK Key as follows:
1. Use the UP (↑) or DOWN (↓) Arrow Keys to
highlight “ACK key" and press ENTER. The display
will read either "opn ack=NO"' or "opn
ack=YES".
2. Use the YES or NO key to select whether the
contact outs should open when the ACK Key is
pressed, "opn ack=YES" or not open, "opn
ack=NO". When the desired selection is displayed,
press ENTER and the display returns to
the "ACK key" menu item.
NOTE
The ACK button position, top left corner of
the screen is always active, so even though
the ACK button is not blinking, the contacts
can still be reset by pressing this area of the
screen.
D. Selecting and Programming Failsafe -
Select and program Failsafe as follows:
1. Use the UP (↑) or DOWN (↓) Arrow Keys to
highlight “Failsafe" and press ENTER. The display
will read either "flsafe=NO”, or “flsafe=YES".
2. Use the YES or NO key to select whether the
contact outs should be Failsafe or not Failsafe.
When the desired selection is displayed, press
ENTER and the display returns to the "Failsafe"
menu item.
Siemens AG C79000-G7374-C211-01
SIREC D Manual