EVCO EPH4EXP Hardware manual - Manual (Page 42)

EVCO S.p.A. c-pro 3 | Hardware manual ver. 3.2 | Codice 114CP3E324
page 42 of 116
For example: a CAN network can be made of a programmable controller, of four I / O expansions and of four user interfaces
with baud rate 500,000 baud.
The maximum length of the connecting cables of the CAN port depends on the baud rate of the CANbus communication, as
follows:
- 1,000 m (3,280 ft) with baud rate 20,000 baud
- 500 m (1,640 ft) with baud rate 50,000 baud
- 250 m (820 ft) with baud rate 125,000 baud
- 50 m (164 ft) with baud rate 500,000 baud.
Connect the CAN port using a twisted pair.
For the settings about the CAN port look at chapter 6 “CONFIGURATION”.
For the models with MP-Bus port the connectors have the following meaning.
Terminal Meaning
CAN + not connected
CAN - / MP signal
GND ground
The maximum number of devices that can make a MP-Bus network is 8.
To the MP-Bus port can be connected the Belimo’s devices that manage correctly the commands MP_Get_SeriesNo,
MP_Set_MP_Address (that allow the configuration of the network) and MP_Set_Relative (that allows to drive the position of the
actuator).
If you want to connect a probe (or a relay) to the actuator, the device must also manage the commands MP_AD_Convert (that allows to
read the probe value) and/or MP_Get_Forced_Control (that allows to read the relay status).
The maximum length of the connecting cables of the MP-Bus port is 10 m (32 ft).
Connect the CAN port using a twisted pair.
For the settings about the CAN port look at chapter 6 “CONFIGURATION”.
DIGITAL INPUTS
Digital inputs 8, 9, 10, 11 and 12.
Terminal Meaning
DI8 digital input 8
DI9 digital input 9
DI10 digital input 10
DI11 digital input 11
DI12 digital input 12
COM common digital inputs
The maximum length of the connecting cables of the digital inputs is 10 m (32 ft).
The digital inputs can be used on condition that they are powered at 24 VAC / DC.