Instruction Manual

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IS 12 AI & IS 12-AI/S Controls and Installation  13

3 Controls and Installation

3.1 Electrical Installation

The IS 12-Al is powered by a voltage of either 24 V DC (15 to 40 V DC) or 24 V AC (12 to

30 V AC), 48 to 62 Hz. The instrument has no warm-up time. With connection to the power, the

instrument operates immediately. To switch off the instrument, unplug the connector.

To meet the electromagnetic requirements, a shielded connecting cable must be used. The

shield of the connecting cable has to be connected only on the pyrometer side to avoid ground

loops.

LumaSense offers connecting cables; they are not part of

standard scope of delivery. The main connecting cable has wires

for power supply, interface, analog output, external laser switch

and external clear of maximum value storage via contact (see

Chapter 10, Reference numbers) and 12 pin angle 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.

For use of the limit contacts, the separate additional cable has

to be used.

connector connector

for main for additional cable

connection cable for limit switches

3.1.1 Pin assignment for the connector on the back of the pyrometer

For main connection cable

Pin Color Indication

Pin assignment

of left connector

(side of

male inserts)

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

external clearing of maximum value storage (bridge to K) *

)

or output for switch contact (see Section 5.13)

G red DGND (Ground for interface)

F black RxD (RS232) or B1 (RS485)

C violet TxD (RS232) or A1 (RS485)

D gray/pink B2 (RS485) (bridge to F)

E red/blue A2 (RS485) (bridge to C)

M orange

Screen only for cable extension

don’t connect at the switchboard

)

for setting of clear time to "extern" (see 5.3 clear time for maximum value storage)