www.balluff.com
2
No. 892883 EN ∙ L16; Subject to modification. Replaces E14.
english
Startup
DANGER
Uncontrolled system movement
When starting up, if the position measuring 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.
2.
Turn on the system.
3.
Check measured values and adjustable parameters
regularly (especially after replacing the transducer or
after repair by the manufacturer). Recalibrate the
transducer, if necessary.
The calibration procedure is described in the
comprehensive user’s guide.
Operating notes
– Check the function of the transducer and all associated
components on a regular basis.
– Take the position measuring system out of operation
whenever there is a malfunction.
– Secure the system against unauthorized use.
Shielding and cable routing
Defined ground!
The transducer and the control cabinet must be
at the same ground potential.
Shielding
To ensure electromagnetic compatibility (EMC), observe
the following:
– Connect the transducer and controller using a shielded
cable.
Shielding: Copper filament braided, at least 85%
coverage.
– Connector version: Shield is internally connected to
connector housing.
Magnetic fields
The position measuring system is a magnetostrictive
system. It is important to maintain adequate distance
between the transducer cylinder and strong, external
magnetic fields.
Cable routing
Do not route the cable between the transducer, controller,
and power supply near high voltage cables (inductive stray
noise is possible). The cable must be routed tension-free.
Cable length
The maximum cable length when using CAT5e cables is
100 m
3)
.
3) Prerequisite: Construction, shielding and routing preclude the effect of
any external noise fields.
Noise elimination
To avoid equipotential bonding - a current flow - through
the cable shield, please note the following:
– Use insulating bushes
– Put the control cabinet and the system in which the
BTL7 is located to the same ground potential.
BTL7-V50D/E/T-M _ _ _ _ -P-C003
Transducer in a Profile Housing
Electrical connection
Power
3
1
4
4
1
2
2
3
1
4
2
3
Pin assignment of connector (view of connector pins of transducer)
Pin
Cable color
Signal
1
BN brown
10…30 V
2
WH white
Not used
1)
3
BU blue
0 V GND
2)
4
BK black
Not used
1)
BUS IN/OUT (data)
Pin
Cable color
Signal
1
YE yellow
TX+
2
WH white
RX+
1) Unassigned leads can be connected to GND on the controller side but not to
the shield.
2) Reference potential for supply voltage and EMC-GND.
3
OG orange
TX−
4
BU blue
RX−
Power
(pin)
Bus OUT
(socket)
Bus IN
(socket)
