LumaSense Technologies ISR 12-LO/GS - Handbuch (Seite 9)

IMPAC pyrometers ISR 12-LO/GS
9
4.1 Pin assignment for the male socket on the bottom side of the pyrometer
Pin Color Indication
K white + 24 V power supply (or 24 V AC) (12 ... 30 V)
A brown 0 V power supply
L green + I
outp. analog output
B yellow – I
outp.
analog output
H gray external switch for targeting light (bridge to K)
J pink
see 4.1.1: output for operating mode contact,
external clearing of maximum value storage,
lens contamination monitoring or extern hold
G red DGND (Ground for interface)
F black RxD (RS232) or B1 (RS485)
C violet TxD (RS232) or A1 (RS485)
D gray/pink RxD (RS232) or B2 (RS485) (bridge to F)
E red/blue TxD (RS232) or A2 (RS485) (bridge to C)
M orange
Screen only for cable extension,
don’t connect at the switchboard
4.1.1
Connector pin J
The connector pin J can be used for 4 different functions:
1) Operating mode contact: During the warm-up of the pyrometer (after connection to the power supply,
the LED display on the converter indicates “7777”) pin J is connected to the power supply voltage. This volt-
age is connected by a relays switch (max. continuous current 0.4 A) to pin K (power supply voltage). This
relays switch opens when the warm-up is finished and the pyrometer is in operating mode. For that reason
this pin can be used as operating mode contact.
2) External clearing of the maximum value storage: When the pyrometer is in operating mode, pin J can
be used for external clearing of maximum value storage (see 8.4). To clear the maximum value storage,
connect pin J for a short time to pin K (power supply voltage).
The function “external clearing” is activated with the following conditions:
• Warm-up is finished (no display “7777“)
• The clear time is set to “extern“ (see 8.4, 9.7).
• The lens contamination monitoring is switched off. This can be done via software InfraWin in “color-bar“
window. The warning level “dirty window” must be set to 0% (see 9.8).
3) Lens contamination monitoring system: The pyrometers are equipped with a contamination monitoring
system. Contamination of lens or sighting window or dust in the sighting path of the pyrometer can interfere
the signal in such a high level that a correct temperature measurement will be impossible (this can also hap-
pen if the object is smaller than the spot size of the pyrometer). To avoid wrong measurements in advance, a
warning signal can be set to a certain contamination level. If contamination reaches this level (or at a certain
too low signal level), a built-in relays (max. continuous current 0.4 A) connects pin J to pin K (power supply
voltage). The setting of the switch level (0 … 99%) can be done via software InfraWin in “color-bar“ window.
If the warning level “dirty window” is set to 0% (see 9.8) the lens contamination monitoring system is
switched off and pin J has the function “external clearing” of maximum value storage (factory setting).
The lens contamination monitoring system is activated with the following conditions:
• Warm-up is finished (no display “7777“)
• The clear time is not set to “extern“ or “hold” (see 8.4, 9.7).
• The pyrometer is operating in “2-color mode” (see 8.5, 9.7)
4) Extern Hold: When the hold function mode is activated the current pouring stream temperature (or the
current temperature reading if the instrument is not in pouring stream mode) is frozen as long as J and pin K
are connected (see 8.4 clear time of the maximum value storage).
K A B
C
D
J
G F E
H M
L
Connector
Pin assignment
(side of male inserts)