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Project Planning Manual | Rexroth IndraControl VAU01.1S
DSR / UPS ⇒ PC Battery OK
Battery defective
or discharged
RTS / PC ⇒ UPS PC OK
PC not OK
DTR / PC ⇒ UPS Stop battery test HIGH LEVEL
Start battery test LOW LEVEL
6.4
Operating Display and Error Display
LED
Display
Designa‐
tion
1
24 V IN
LED green Normal mode
LED off
2
UPS OK LED green Normal mode
LED off
3
PC OK
LED green Normal mode
LED off
HIGH LEVEL
The DSR signal indicates, if the BATTERY is charged or discharged. If
(+5 V)
the battery is discharged or defective, the red LED "Battery Low" is trig‐
gered.
LOW LEVEL
If the battery is not plugged in, the DSR signal indicates battery error,
(-5 V)
only if the battery test (DTR signal) is active at the same time. This is
caused because only during the battery test the charging process of the
battery is interrupted and therefore no voltage is applied to the battery
connector.
HIGH LEVEL
The RTS signal indicates to the UPS, if the PC has booted. It is also
(+5 V)
indicated whether:
●
the PC is supplied with voltage via the UPS,
LOW LEVEL
(-5 V)
●
the COM interface is connected to the PC,
●
the PC has booted.
If the RTS signal has HIGH LEVEL (+5 V), the green "LED VCC_PC_OK"
is triggered.
Additional functions:
●
If the RTS signal is set to LOW LEVEL, there is no battery test.
●
If the RTS signal is set to LOW LEVEL, a connection between the
input signal DTR and the output signal DSR is established and the
signal level is inverted at the same time. This serves to verify,
whether the COM interface is plugged in.
The DTR signal starts the battery test. For this, the RTS signal must
(+5 V)
additionally have HIGH LEVEL. Irrespective of the signal level of the
DTR signal, a timer switches off the internal test load of 500 mA within
the UPS after max. 10 sec, if the battery test has been previously started.
(-5 V)
Fig.6-11:
Description of the COM interface signals
To indicate device states five LEDs are arranged at the front panel of the UPS.
Start the measures specified in the following
LEDs" on page 25
if one of the succeeding LEDs displays an error or a note.
Meaning
24 V DC missing
Internal voltages missing
Serial interface cable (UPS – PC ) is not plugged
in or is defective.
Connected PC power supply unit has no supply
voltage or has not started yet.
UPS software has not started or is not installed. Check the connected PC
Electric Drives
| Bosch Rexroth AG
and Controls
Interfaces, Display and Operating Components
fig. 6-12 "Description of the
Measure
-
Check the cable of the supply voltage that
is connected to X1S2
-
Check the two SMD fuses (see
6.5 "Fuses F1" on page
UL certification
-
Check interface cable
Check the PC cable connected to the
X1S2.
25/43
chapter
26). T2.5 A with
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