Siemens 3RB22

Technical Data
3ZX1012-0RB22-1AA1 31
English
Optional
Analog output
Electronic overload relay with analog output (function expansion
module 3RB2985-2AA0, -2AB1 and -2AA1, refer to Fig. IV).
4 to 20 mA
1% x I
e
= 0.128 mA
Example: I
out
= 10.40 mA; I
e
= 6.0 A
I = 50% of I
e
I
motor
= 3 A
Max. output current 20 mA
Terminals I(+) and I(-)
max. burden 100 Ω
Accuracy +/– 10 %
Short-circuit-proof and resistant to no-load operation!
Note for the recording of the analog value via the analog input:
Ri = 100 Ω (max.)
passive, no sensor supply permitted e.g.: 6ES7-331-7KF02-0AB0.
0 mA
4 mA
8 mA
12 mA
16 mA
20 mA
24 mA
0%xI
e
20%xI
e
40%xI
e
100%xI
e
60%xI
e
80%xI
e
16.8 mA
I/I
e
[%] = (I
out
– 4 mA) / 0,128 mA
I
motor
[A] = (I
out
– 4 mA) x I
e
/ 12,8 mA
I
out
[mA] = I
motor
x 12,8 mA / I
e
+ 4 mA