Dräger Polytron 7500 Instructions For Use Manual page 54

The menu » Settings «
Test functions for the analogue interface
– Test analogue
— This function is used to set various currents in the range 3 to 22 mA on the ana-
logue interface.
Note:
These functions may trigger alarms in the control unit! If necessary, the
alarms should be disabled in the control unit before using the functions.
Select the menu items » Settings «, » Communication «, » Analogue interface «
and » Test analogue « in this order, pressing the »
If the alarms are disabled in the control unit, confirm the message » Switch off all
alarms « by pressing the »
Use the » « and »
M
the » « key to confirm the setting.
OK
Use the »» « and »
M
the » « key to activate it.
OK
— The selected current is transmitted on the analogue interface.
Use the » « and »
M
to confirm the selection. The function is terminated.
When the alarms in the control unit have been enabled again, confirm the mes-
sage » Switch on all alarms « by pressing the »
– Test fault
— This function is used to set the analogue interface to the fault signal »
Note:
These functions may trigger alarms in the control unit! If necessary, the
alarms should be disabled in the control unit before using the functions.
Select the menu items » Settings «, » Communication «, » Analogue interface «
and » Test fault « in this order, pressing the »
Use the » « and »
M
activate it.
— The current for the fault signal is transmitted on the analogue interface.
Use the » « and »
M
activate it.
— The current for the fault signal is switched off.
– Test warning
— This function is used to set the analogue interface to the warning signal »
Note:
These functions may trigger alarms in the control unit! If necessary, the
alarms should be disabled in the control unit before using the functions.
Select the menu items » Settings «, » Communication «, » Analogue interface «
and » Test warning « in this order, pressing the »
Page 54 of 72 Pages
OK
« key.
OK
« keys to set each position of the current value and press
« keys to select the state » Set current output « and press
« keys to select the line » Next « and press the »
« key.
OK
« key after each selection.
OK
« keys to select » Enable « and press the »
« keys to select » Disable « and press the »
OK
« key after each selection.
« key
OK
«.
« key to
OK
« key to
OK
«.
« key after each selection.
9023927 - 2nd edition - May 2007