Table 7.-2 Application areas
NUMBER CODE NAME DESCRIPTION
6 REF 542plus Normal operation
A REF 542plus DNV Marine and offshore application
B REF 542plus ATEX-1 Protection of motor in an explosive
area (Release 1.1)
D REF 542plus ATEX-2 Protection of motor in an explosive
area (Release 2.0)
F REF542plus ATEX-2.5 Protection of motor in an explosive
area (Release 2.5)
Table 7.-3 Mainboard versions
NUMBER CODE NAME DESCRIPTION
B 751021/
802
Basic Version with RJ 45 Ethernet port
S 751021/
803
Standard Version basic with additional IRIG B
and CAN interface
F 751021/
801
Full Version standard with additional
optical links
A 014629/
802
Basic Version with RJ 45 Ethernet port
E 014629/
803
Standard Version basic with additional IRIG B
and CAN interface
C 014629/
801
Full Version standard with additional
optical links
Table 7.-4 Power supply versions
NUMBER CODE NAME DESCRIPTION
1 750126/801 U
n
= 110 V DC Operative range 70% to 120% of 110
VDC
2 750126/802 U
n
= 220 V DC Operative range 70% to 120% of 220
VDC
3 750168/801 U
n
= 48 - 220 V DC Operative range 80% of 48 V DC to
120% of 220 V DC
6 750168/802 U
n
= 48 - 220 V DC Marine application with operative
range 80% of 48 V DC to 120% of 220
VDC
52
REF 542plusREF 542plus
Multifunction Protection and Switchbay Control
Unit
Technical Reference Manual
1MRS755859