LumaSense Technologies ISQ 5-LO - Handbuch (Seite 8)

IMPAC pyrometers ISQ 5 · ISQ 5-LO
8
3 Electrical Installation
The pyrometer is powered by 24 V DC ± 25% (very well stabilized, ripple max. 50 mV). When connecting the
device to the power supply ensure correct polarity. The device does not need to be warmed up or run in ad-
vance and is immediately ready for use. For switching off the instrument, interrupt the power supply or un-
plug the electrical connector.
To meet the electromagnetic requirements (EMV), a shielded connecting cable must be used. The shield of
the connecting cable has to be connected only on the pyrometer’s side. If the connecting cable is extended,
the shield of the extension also needs to be extended. On side of the power supply (switch board) the shield
must be open to avoid ground loops. The earth connection of the instrument housing should be connected
directly at the place of the instrument.
LumaSense offers connecting cables, they are not part of standard scope of delivery. The connecting cable
has wires for power supply, interface, analog output, external laser switch and external clear of maximum
value storage via contact (see section 14, Reference numbers) and 12 pin connector. The cable includes a
short RS232 adapter cable with a 9 pin SUB-D connector for direct PC communication. This adapter is not
used in combination with RS485 interface.
3.1
Connector pin assignment on the back of the pyrometer
Pin Color Indication
K white +24 V DC power supply
A brown 0 V DC power supply
L green + I
out.
analog output
B yellow – I
out.
analog output
H gray Targeting light activate / deactivate via external switch
J pink
see 3.1.1: external clearing of max. value storage or hold function
Only pyrometers with PID-controller (controller activated):
set controller output to 0% (emergency stop)
G red DGND (RS232) or S (RS485) (GND for interface)
F black RxD (RS232) or B1 (RS485)
C violet TxD (RS232) or A1 (RS485)
D gray/pink B2 (RS485) (bridged with F)
E red/blue A2 (RS485) (bridged with C)
M orange screen only for cable extension, don’t connect to the switchboard
3.1.1
Connector pin J
The connector pin J can be used for 2 different functions:
1) 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. 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:
 The clear time is set to “extern”.
 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%.
2) Lens contamination monitoring system: The pyrometers are equipped with a contamination monitor-
ing system. Contamination of lens or sighting window or dust in the sighting path of the pyrometer can in-
terfere the signal in such a high level that a correct temperature measurement will be impossible (this
can also happen if the object is smaller than the spot size of the pyrometer). To avoid wrong measure-
ments 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 to 99%) can be done via software
InfraWin in “color-bar” window. If the warning level “dirty window” is set to 0% the lens contamination
monitoring system is switched off and pin J has the function “external clearing” of maximum value stor-
age (factory setting).
The lens contamination monitoring system is activated with the following conditions:
 The clear time is not set to “extern”.
 The pyrometer is operating in “2-color mode”
K A B
C
D
J
G F E
H M
L
Connector
Pin assignment
(side of male inserts)