Signals; Internal Signals - B. Braun Dialog+ Service Manual

+
Dialog
SW 9.xx
2.22.7

Signals

2.22.8

Internal Signals

BA-TE-DE08C M.KAY
Dialog+ SW9xx_sm_Chapter 2_1-2010.doc/pdf <100329> yymmdd
2 . T e c h n i c a l System Description
Audible alarm (LLC)
AKAL
AKAL_S Audible alarm (LLS)
Enable battery operation (possible in therapy mode only)
AKKU_EN
Signal for external LED (on front panel board) – charging of battery
AKKU_LADEN
Load status of the battery
/AKKU_OK
B24OFF +24 VGB ON/OFF (LLS)
+24VGB OK
B24OK
+24 VGD ON/OFF (LLS)
D24OFF
+24VGD OK
D24OK
Jumper X101 – is used to switch on the power supply without using the /REM
/DIR_ON
signal and deactivates the alarms. (The watchdog signal for the function of the
heater (H_DIN) is still required to drive the heater.)
The machine can be switched on with this signal (see menu 1.26 Battery
/EXT_ON
Option: external ON).
Status for external switch-on possibility (e.g. central disinfection),
EXT_STATE
simultaneously input and output; the signal is looped through (connector P14/3
= input).
Clock signal for heater data from LLC. The H_DCLK Signal is an open-collector
H_DCLK
signal and is generated by the LLC. The H_DCLK Signal is used to send the data
at H_DIN to the microcontroller.
0, 1
The H_DIN signal is an open-collector signal, is generated by the LLC and sent
H_DIN
to the microcontroller (data to control the heater).
0
1
Programming mode for heater data. The /H_PROG signal is an open-collector
/H_PROG
signal and is generated by the LLC.
0
1
Mains switch
/MSWITCH
Staff call from SMPS-MC
PERSR_N
PF Power fail (power failure)
Remote signal of LLC (clock on digital board)
/REM
Watchdog LLS
WD_S
Power fail for the power supply monitoring
/PF
Watchdog A watchdog is integrated to prevent a permanent unintentional drive of the
heater in case of an LLC reset. The watchdog is retriggered by the LLC with
< 2 s. The H_DIN signal is used for triggering. The watchdog prevents a drive of
the heater for t = 10 s after the switch-on of the switch mode power supply.
The watchdog has no safety function and is therefore not tested before the
therapy starts.
Data clock
Half wave of mains voltage: heater switched off
Half wave of mains voltage: heater switched on
Programming mode
No programming mode
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