KROHNE ESK4 Ex II2G Ex iEN - Manual (Page 6)

2
DEVICE DESCRIPTION
6
ESK4... ...
www.krohne.com 05/2014 - 4001078702 MA ESK4 Ex II2G AD R02-en
2.7 Electrical data
The connection may only be made using separately certified intrinsically safe isolating amplifiers
or zener barriers with the following maximum values per circuit:
ESK4... ... electrical values
The connector behind the cutout on the ESK4... module cover connects internal intrinsically safe
circuits. Only certified modules of type ESK4 I/O, ESK4 FF or ESK4 PA may be connected. The
additional connector on the ESK 4I/O module connects the optional display as an internal
intrinsically safe circuit.
Type
Signal Output Terminals Maximum value per intrinsically safe circuit
U
i
I
i
P
i
C
i
L
i
ESK4 ... 11, 12 30 V 130 mA 1 W 0 nF 10 µH
ESK4-I/O 1, 2, 3 or
4, 5, 6 or
7, 8
30 V 130 mA 1 W 10 nF 0 µH
ESK4-FF / ESK4-PA D, D- 24 V 380 mA 5.32 W 0 nF 0 µH
FISCO FIELD DEVICE
AD_ESK4_II2G_R02_en_4001078702_PRT.book Page 6 Wednesday, June 25, 2014 7:19 AM