CIRCUTOR CEM-M-RS-485 - Manual (Page 9)

The unit must be connected to a power circuit that is protected with gL fuses (IEC 269) or
M fuses, with a rating of 0.5 to 2 A. It must be fitted with a circuit breaker switch or equiva-
lent device for disconnecting the unit from the power supply mains.
The RCCB or equivalent device must be in the immediate vicinity of the unit and must be
easily accessible.
The power circuit is connected with a cable with a section measuring up to 2.5 mm 2 .
The RS-485 connector enables cables of up to 1.5 mm 2 to be inserted.
The unit's operating temperature is between -25ºC and +70ºC; always use con-
nection cables that can withstand these temperatures.
3.3.- UNIT TERMINALS
Table 2:List of CEM M-RS485 terminals�
Unit terminals
1: Auxiliary power supply. 3: A(+), RS-485
2: Auxiliary power supply. 4: B(-), RS-485
1 2
3 4
Figure 3:CEM M-RS485 terminals�
9 Instruction Manual
CEM M-RS485