Camille Bauer SIRAX SI 815-6, Operating Instructions Manual

13

English

1

 “Input” and “output” in this case refer to the direction of power 

supply fl ow.

4. Technical data

Input signal E

1

(Input circuit between signal isolator and power pack) 

DC current signal I

E

: 4...20 

mA

Voltage U

E

: 

12…30 V DC

Overload capacity: 

≤ 50 mA continuous

Output signal A

1

(Input circuit between signal isolator and 2-wire transmit-
ter)

DC current signal I

A

: 4...20 

mA

Voltage U

A 

(for I

E

 = 20 mA and U

E

 = 22 V):

  > 19.3 V 

with standard (non-Ex) version,

not designed for communications protocol

  > 18.5 V 

with standard (non-Ex) version,

designed for FSK communication

  > 14.3 V 

with Ex versions,

not designed for communications protocol

  > 13.3 V 

with Ex versions,

designed for FSK communication

Voltage drop U

V

 = U

E

 – U

A

 (at U

E

) 12…22 V:

< 2.7 V 

with standard (non-Ex) version,

not designed for communications protocol

< 3.5 V 

with standard (non-Ex) version,

designed for FSK communication

< 7.7 V 

with Ex versions,

not designed for communications protocol

< 8.7 V 

with Ex versions,

designed for FSK communication

Residual ripple: 

< 20 mV ss (120 kHz)

Time constant: 

Approx. 5 ms

Accuracy data

Error: < ± 0.2%
 

(Reference value 20 mA of output 
signal, including typical linearity 
error < ± 0.1%)

Ambient conditions

Commissioning
temperature: 

– 10 to + 40 °C

Operating temperature:  – 25 to + 40 °C, 

Ex –20

 to + 40 °C

Storage temperature: 

– 40 to +70 °C

Annual mean
relative humidity: 

75% 

5. Mechanical coding of the plug-in module

Where there is a danger of inserting a module in the 
wrong slot, the possibility has to be excluded as 
prescribed in EN 50 020, Section 6.3.2. 

To this end, 

the units must be supplied already equipped with 
coding inserts as shown in Figures 3 and 4.

Fig. 4. Coding of the plug-in
module type SI 815-62.. in

Ex-version, (output signal
intrinsically safe).

Fig. 3. Coding of the plug-in
module type SI 815-61.. in 

standard (non-Ex) version.

Legend to Figs. 3 and 4:

= With set of code   

= Without set of code

Back

A

B

C

D

E

F

G

H

I

K

L

M

Back

A

B

C

D

E

F

G

H

I

K

L

M

The series also includes “intrinsically safe” versions 
[EEx ia] IIC with an intrinsically safe measurement/supply 
circuit. These operate in conjunction with intrinsically safe 
two-wire transmitters located in explosion hazard areas.