LumaSense Technologies IS 12-TSP - Handbuch (Seite 16)

IMPAC pyrometers IS 12-TSP · IGA 12-TSP
16
9.5 0 / 4 mA (analog output)
The analog output has to be selected according to the signal input of the connected
instrument (controller, PLC, etc.).
9.6
SETP (limit contacts)
The instrument is equipped with two independent relay limit switches. These are two separate switch-over
relay contacts, adjustable to any temperature of the pyrometer’s temperature range. The switch-status is
indicated in the display with the LED’s S1 and S2. When the measuring temperature exceeds the adjusted
limit contact temperature the relay switches and the LED indication is on.
9.7
°C / °F (temperature display)
The temperature can be displayed in °C or °F.
9.8
RS (digital interface)
Selection between RS232 and RS485. (This adjustment can only be done on the py-
rometer).
9.9
ADR (address)
For the connecting of several pyrometers with RS485 with one serial interface it is nec-
essary to give each instrument an individual address for communication. First it is nec-
essary to connect each single instrument to give it an address. After that all instruments
can be connected and addressed individually. If parameters may be changed simulta-
neously on all pyrometers, the global Address 98 can be used. This allows you to program all pyrometers at
the same time, regardless of the addresses that have already been assigned. If the address of a pyrometer
is unknown, it is possible to communicate with it using the global Address 99 (connect only one pyrometer).
9.10
kBaud (baud rate)
The transmission rate of the serial interface in Baud (Bd) is dependent on the length of
the cable. A standard cable length with RS232 for 19200 Bd is 7 m, with RS485 2 km.
The baud rate is reduced by 50% if the transmission distance is doubled.
9.11
10 mA (test current output)
The test function activates a test current of 10 mA on the analog output, independently if the instrument is
adjusted to 0 to 20 mA or 4 to 20 mA. This enables to test external indicators for correct scaling. The reading
of the internal indicator should correspond to the reading of the external indicator. If both displays show dif-
ferent readings the external indicator has a wrong temperature range or input current setting. The test func-
tion is switched off automatically after 1 minute and the instrument is working in the measuring mode.
9.12
Wait time (only available via interface commands, see 14, Data format UPP ® )
Using a pyrometer with RS485 it is possible that the connection is not fast enough to
receive the pyrometer’s answer to an instruction of the master. In this case a wait time
can be set to slow down the data transfer (e.g.: tw = 02 at a baud rate 9600 means a
wait time of
2 /
9600
sec).
Settings:
00 Bit
. . .
99 Bit
9.13
Switch contact
The pyrometer is equipped with a built-in switch contact which allows to use the pyrometer as a thermo
switch. This function enables the detection of a hot object in the measuring beam of the pyrometer. The con-
tact is activated only in combination with a clear time settings “auto“ or clear times
 1 s (see 9.3 tCL / s
(Clear times of the maximum value storage)). If the temperature exceeds 2°C min. or 1% of the span of
the temperature sub range above the minimum temperature, the supply voltage (pin K) is connected to pin J.
Settings:
0 ... 20 mA
4 ... 20 mA
Settings:
°C
°F
Settings:
RS232
RS485
Settings:
00
. . .
97
Settings:
2.4 kBd
. . .
115.2 kBd