Siemens KION Service Manual page 22

Description of functions
PC 1753 DC/DC Converter
This description also refers to the block diagram
"Power supply – Main functions".
PC 1753 DC/DC C
ONVERTER
from PC 1675 P
OWER
• +12 V to connected equipment (lamp, recorder,
MIB, CPS/IDS Diagnostic and DuoView).
• +13 V to the KION Monitor.
• A fused +24 V to the multigas analyzer.
There are three fuses on PC 1753:
• F1/PC 1753 = 15 A / 32 V. Cuts the +24 V power
supply to the DC/DC C
3
disables the +12 V power supply to connected
equipment. No alarm is activated.
• F2/PC 1753 = 15 A / 32 V. Cuts the +24 V power
supply to the DC/DC C
disables the +13 V power supply to the KION
Monitor. The KION Monitor will run on its internal
battery and alarm is activated.
• F3/PC 1753 = 7.5 A / 32 V. Cuts +24 V power
supply to the multi gasanalyzer. Alarm is activated.
PC 1675 Power Supply
This description also refers to the block diagram
"Power supply – Main functions".
The main functions are:
• Generates and distributes +15 V, - 15 V and +5 V to
the different KION subsystems. Also generates
+12 V and -12 V for the CPS/IDS via linear
regulators.
• The Logic & Timing block handles different time
delays for voltages at Power On:
– The input signal MEAS_INHIBIT comes from ALA
in order to stop the battery capacity check.
– The input signal DISABLE_VALVES comes from
ALA, CON or MEA in order to disable
+24 V_VALVE (stop power supply to gas
modules) e.g. at upper pressure alarm.
• Power supply to gas modules, +24V_VALVE, will
also be cut at Low battery voltage or at System
Off.
• B D F
ATTERY RAWER AN
As from KION S/N 01501, this voltage is tempera-
ture controlled by an NTC resistor at connector
P123. Reduced fan speed up to 25°C (77)°F. Linear
increased up to max. speed at 45°C (113°F).
• Power supervision function in the ALA subsystem
and P C
ATIENT ASSETTE
supplied by +24V_PTC.
3 - 4
is supplied with +24 V
S and generates:
UPPLY
24/12 V which
ONVERTER
24/13 V which
ONVERTER
is power supplied by +24V_FAN.
V C is power
ALVE ONTROL
• Battery status and measure signals from the block
Charging/Discharging control is supplied to ALA.
• Power supply of the system will be cut at Low
battery voltage or at System Off.
There are two fuses on PC 1675:
• F1/PC 1675 = 30 A / 32 V. Battery short-circuit
protection. The internal battery is disconnected and
alarm is activated.
• F2/PC 1675 = 20 A / 32 V. Protects the internal
battery from failures on PC 1675. The internal
battery is disconnected and alarm is activated.
Battery Drawer Fan
The B D
ATTERY RAWER
drawer compartments. If the fan fails, the signal
FAN_FAIL generates a diagnostic log message.
If the temperature in the battery drawer
compartment is above 45 – 50°C (113 – 122°F), e. g.
due to B D
ATTERY
multigas analyzer and the lifetime of the I
B may be affected.
ATTERY
Siemens-Elema AB
KION / KION-i
F pulls air out of the battery
AN
F failure, the function of the
RAWER AN
NTERNAL
E382 E392E 061 01 02 02