KROHNE MAC 100 EN - Manual (Page 20)

4
ELECTRICAL CONNECTIONS
20
OPTISENS MAC 100
www.krohne.com 04/2011 - MA OPTISENS MAC 100 R01 en
Electrical connections
4.1 Safety instructions
4.2 Used abbreviations
DANGER!
All work on the electrical connections may only be carried out with the power disconnected. Take
note of the voltage data on the nameplate!
DANGER!
Observe the national regulations for electrical installations!
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
Abbreviation Description
C
p
Control input passive
I
a
Current output active
I
max
Maximum current
I
nom
Nominal current
R
L
Load resistance
R plus number (e.g. R1) Relay contact
P Power
U
ext
External voltage source
U
ext, max
Maximum voltage of the external voltage source
U
int, nom
Nominal internal voltage
.book Page 20 Friday, April 1, 2011 4:59 PM