1)
DescriptionTerm.Connection
EIA-485 Modbus RTU
Embedded Modbus RTU (EIA-485)B+
A-
BGND
Shield
Termina-
tion & bias
1)
× = base unit, empty = BMIO-01 module
￭ Fieldbus connection diagram
This connection diagram is valid for drives with a fieldbus extension module. The type
code is ACS380-04xC followed by an option code that designates the extension module.
DescriptionTerm.Connection
Digital I/O and relay output connections
Aux. voltage output +24 V DC, max. 250 mA+24V
Aux. voltage output commonDGND
Digital input commonDCOM
Fault reset (operates also through the fieldbus interface)DI1
Not configuredDI2
Relay output 1
No fault [Fault (-1)]
RC
RA
RB
Safe torque off (STO)
Safe torque off function. Factory connection. Both circuits
must be closed for the drive to start.
S+
SGND
S1
S2
Electrical installation – North America 101
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