Mettler Toledo IND256x Guia De Instalacion página 24

2.2.2.1. Internal AC Power Input (IECEx & ATEX Approved Terminals Only)
2.2.2.2. Internal DC power input (IECEx & ATEX Approved Terminals Only)
2-4 METTLER TOLEDO IND256x Weighing Terminal Installation Manual
Figure 2-3: AC Power Input Connector with Cover
Figure 2-4: AC Power Input Connector, Cover Removed
Table 2-2: AC Power Input Cable Color Code
Pin
L
N
THE DC POWER SUPPLY MUST BE CONNECTED TO AN 18-30V DC INPUT. DO NOT
CONNECT TO AC POWER
FOR IND256X DC VERSION TERMINALS, THERE IS NO GALVANIC SEPARATION BETWEEN
THE NON-INTRINSICALLY SAFE SUPPLY CIRCUIT AND THE INTRINSICALLY SAFE OUTPUT
CIRCUITS. THE NON-INTRINSICALLY SAFE CIRCUIT MUST BE SAFELY CONNECTED TO
EARTH. AND POTENTIAL EQUALIZATION MUST EXIST ALONG INTRINSICALLY SAFE
CIRCUITS.
ALTERNATIVELY, THE NON-INTRINSICALLY SAFE SUPPLY CIRCUIT SELV) MUST BE
SAFELY SEPARATED FROM EARTH.
THE EXTERNAL CUSTOMER-PROVIDED DC POWER SUPPLY MUST HAVE A MAXIMUM
OVER-VOLTAGE CATEGORY II ACCORDING TO IEC 60664-1.
Pin color
Brown
Blue
WARNING
WARNING
WARNING
30491430 | 02 | 11/2019