Siemens rueda de andar LC 500 Manual

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Siemens rueda de andar LC 500
Page 70 SITRANS LC 500 – INSTRUCTION MANUAL 7ML19985GE01
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Appendix A
Digital Signalling Mode (solid-state output)
Controls the solid-state switch output and allows you to set the switch to contact open or
contact closed. The settings are relative to a covered probe, and the criteria are set in
menu 15 and 16. With contact closed, the switch is on: with contact open the switch is off.
While a button is pressed, the LCD displays S: cc
1
(contact closed) or S: co (contact
open). When the button is released an equal sign (=) indicating status replaces the colon,
and the reading depends on the status of the probe
2
.
Example: S = cc is selected (contact closed with a covered probe)
• If the probe is uncovered when the button is released, the display changes from
S: cc to S=co.
• If the probe is covered when the buttons are released, the display changes to
S = cc.
• If you press either button briefly, the LCD displays the current setting, in this
case, S: cc.
1. Set the rotary switch to 7.
2. Press and hold the RED (+) or BLUE (–) button to select contact open or contact
closed.
or: Press and hold both buttons to disable this function.
Menu selections 13, 14, 15 and 16 set the criteria for delay and threshold that have to be
met for a change in output signal.
Note: Menu 18 has precedence over menu 17.
1.
A colon at the extreme left of the display appears while the button is pressed to
indicate when a setting is accepted, for example : S: cc.
2.
If digital fault signalling is enabled at menu 18, it takes precedence, and no equal
sign will appear in the display for menu 17 if the device is responding to a fault.
Menu
Item
Affected
by:
Rotary
Switch
Position
Left
Arrow
Mode
Des-
cription
Action Values
17 18 7 On
Disabled *
Press and
hold both
buttons
Display
shows
S: - -
Digital
Signal-
ling
Mode
Contact
Closed:
switch on
Press and
hold RED (+)
button
Display
shows
a
S: cc
a.
While the button is pressed: when released the display depends on the probe
status.
Contact
Open: switch
off
Press and
hold BLUE
(–) button
Display
shows
a
S: co
Tabla de Contenidos
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