KROHNE MAC 100 EN - Manual (Page 25)

ELECTRICAL CONNECTIONS
4
25
OPTISENS MAC 100
www.krohne.com 04/2011 - MA OPTISENS MAC 100 R01 en
4.8 Description and properties of the outputs and the input
4.8.1 Current output
• All outputs are electrically isolated from each other and from all other circuits.
• All operating data and functions can be adjusted.
• Output data: measuring results of the sensor inputs A and B inclusive temperature.
• Active mode: output range 0(4)...20 mA, load resistance R
L
≤ 550 Ω at I
max
≤ 22 mA,
U
int, nom
= 15 VDC.
• Self-monitoring: interruption or load resistance too high in the current output loop.
• Error signalling possible via alarm relays, error indication on LC display.
• Current value error detection can be adjusted.
4.8.2 Relay outputs
The device has three electro-mechanical relays that can work as alarm relays or limit switches
(electronic relays are in preparation):
• The relay contacts are electrically isolated from each other and from all other circuits.
• The output stages of the status outputs / limit switches behave like relay contacts.
• Possible conditions: NO (normally open) or NC (normally closed).
• Contact ratings:
- Relays for low voltages: U ≤ 30 VDC, I ≤ 1 A, resistive load (PELV / SELV) or U ≤ 50 VAC,
I ≤ 4 A, resistive load (PELV / SELV)
- Relays for high voltages: U = 100...230 VAC, I ≤ 4 A, max. 1000 VA resistive load
• The contact circuits have to be either PELV / SELV circuits or hazardous voltage circuits.
DANGER!
Never install or operate the device in potentially explosive areas, it might cause an explosion that
can result in fatal injuries.
INFORMATION!
For further information refer to the connection diagrams and the technical data table.
DANGER!
Never install or operate the device in potentially explosive areas, it might cause an explosion that
can result in fatal injuries.
INFORMATION!
For further information refer to the diagrams on page 28 and on page 29 as well as the technical
data table
on page 75.
.book Page 25 Friday, April 1, 2011 4:59 PM