Balluff BML SGA-AEZ1-LZZZ 1 Series, User Manual

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5.3 Status indication/error monitoring
During the measurement signal strength and plausibility of
the absolute position are continuously monitored.
The sensor status is indicated either by the interface (see
Section 6) or by the Status LED, which in conformance
with DRIVE-CLiQ is labeled RDY .
At bootup the RDY LED indicates the following sequence:
Fig. 5-1:
OFF
No
voltage
RED
Boot sequence
ORANGE
Set up DRIVE-CLiQ
communication
GREEN
Cyclical
communi-
cation
Boot sequence of the RDY-LED
RDY-LED status indications:
LED
color
Status Description
– Off No power present or power is
outside the permissible
tolerance range.
Green Illuminated The sensor head is ready: there
are no errors and cyclical
DRIVE-CLiQ communication is
active.
Orange Illuminated The sensor head is ready to set
up DRIVE-CLiQ communication
or communication is now being
established.
Red Illuminated Startup sequence - there is at
least one error.
Green/
Red
Flashes at
0.5 Hz
Component firmware is being
downloaded.
Flashes at
2 Hz
Downloading of the component
firmware is completed, device
waiting for a power cycle.
Green/
Orange
or Red/
Orange
Flashing Component detection is
enabled. The LED color
depends on the current status
of the sensor head.
Tab. 5-1: RDY-LED status indications
Error messages (indicated by red LED)
– Sensor outside the measuring range: the active surface
has left the tape.
– Plausibility check: There is an error in the plausibility
check for the absolute position.
– External temperature processing error: externally
connected temperature sensor is defective, the cable
are defective (cable break) or the temperature sensor is
not connected.
– System error: The sensor head is defective.
For more information about possible sources of
error, see Section 10.1 on page 25.
5
Startup
5.1 Starting up the system
DANGER
Uncontrolled system movement
When starting up, if the magnetic encoder system is part
of a closed loop system whose parameters have not yet
been set, the system may perform uncontrolled
movements. This could result in personal injury and
equipment damage.
►
Persons must keep away from the system’s
hazardous zones.
►
Startup must be performed only by trained technical
personnel.
►
Observe the safety instructions of the equipment or
system manufacturer.
1. Check connections for tightness and correct polarity.
Replace damaged connections or devices.
2. Turn on the system.
3.
Check function.
5.2 Preset
The magnetic tape has an absolute coding over a length of
48 meters. For shorter travel distances the position of the
sensor head at each desired position (Preset) can be
permanently set to a start value of 10 mm (recommended).
For a preset a voltage between 10 V DC and 30 V DC for
≥ 500 ms is applied to the corresponding pin. The current
position is then 10±1 mm. If the sensor head is moved
back from there more than 10 mm, the position value
drops to 0 and then goes negative (two’s complement).
If these values are not meaningful to the controller, the
Preset function must be used at the start of the movement
range. The transmitted position can never be negative
then.
If the magnetic tape is replaced, the Preset function must
be set again at the start position.
BML SGA-AEZ1-LZZZ- _ _ _1- _ _ _ _
Absolute magnetic encoder system
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