Multifunction Protection and Switchgear Control unit REF542plus
Manual: Motor Protection with ATEX-Certification
IEC 60870-5-103 with extension according to VDEW guidelines for controlling,
optical interface with ST connector for glass fiber (multi mode)
MODBUS RTU, electrical interface with two RS485 ports (twisted pair) or opti-
cal interface with two standard ST connector for glass fiber (multi mode)
9.7 Power supply
9.7.1 Base Unit
Rated voltage 110 VDC (-30%, +10%),
220 VDC (-30%, +10%) or
48 to 220 VDC (-15%, +10%)
Power consumption
≤ 20 W typical
Inrush current Module 750168: 10A, 1ms; 35A, 100µs
Module 750126: 8,3A, 1ms; 21A, 100µs
Harmonics < 10%
9.7.2 HMI Control Unit
Rated voltage: For auxiliary voltage in the range of:
• 48 to 10 VDC (-15%, +10%)
• 110 to 220 VDC (-15%, +10%)
Power consumption
≤ 10 W or ≤ 6 W for backlight on or off
Harmonics < 10%
9.8 Environmental conditions
Ambient operation temperature -5 to + 55°C
Ambient transport and storage tem-
perature
-20.to +70°C
Ambient humidity Up to 95% without condensation
9.9 Degree of protection by enclosure
9.9.1 Central Unit
Housing IP20
9.9.2 RHMI Control Unit
Front IP 54
Rear IP 22
1VTA100114-Rev. 04 en PTMV, 19.01.05 Motorprotection 58 / 66
Valid from Version V4D02
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