IS 12-TSP / IGA 12-TSP Manual
Controls and Installation
•
15
3.2.2
Connecting to RS485 interface
Half-duplex mode:
A1 and A2 as well as B1 and B2 are
bridged in the 12-pin round connector
of the connecting cable, to prevent
reflections due to long stubs. It also
safeguards against the interruption of
the RS485 Bus system should a
connecting plug be pulled out. The
master labels mark the connections on
the RS485 converter. The transmission
rate of the serial interface in Baud (Bd)
is dependent on the length of the
cable
.
Values between 2400 and
115 kBd may be set.
The baud rate is reduced by 50% when
the transmission distance is doubled (see
4.12
,
Baud rate (kBaud)
).
Typical cable length for 19200 Bd is
2 km.
Terminator 120 Ohm
A
B
S
K
A
B
C
D
J
G
F
E
H
M
L
K
A
B
C
D
J
G
F
E
H
M
L
K
A
B
C
D
J
G
F
E
H
M
L
DG
ND
B1
A2
B2
A1
DG
ND
B1
A2
B2
A1
DG
ND
A2
B2
A1
B1
Master
Pyrometer 32
e.g. address 31
Pyrometer 2
e.g. address 01
Pyrometer 1
e.g. address 00
3.3
Connection of additional analyzing devices
Additional analyzing instruments, for example a LED digital display instrument only needs to be
connected to a power supply and the analog outputs from the pyrometer. Another Instrument
like a controller or printer can be connected to the display in series as shown above (total load
of resistance max. 500 Ohm).
3.3.1
Laser targeting light
For easy alignment to the measuring object the pyrometers can be equipped with a laser
targeting light. This is a visible red light with a wavelength between 630 and 680 nm and a
maximum power of 1 mW. The laser is classified as product of laser class II.
Warning:
To reduce the risk of injury to the eyes, do not look directly
into the targeting laser and do not point the targeting laser
into anyone's eyes. The instrument is equipped with a class II
laser that emits radiation.
Safety regulations:
•
Never look directly into the laser beam. The beam and spot can be watched safely from side.
•
Make sure that the beam will not be reflected into eyes of persons by mirrors or shiny
surfaces.
yellow
LED digital
di l
Controller
Power supply
gree
brow
white
230 V ~
24 V DC
°C
Writer
