Danfoss MCO 351, Technical Data Manual, Page: 11 / 49

2.2.4. Option Card Layout
MCO 351 control terminals are plug connectors with screw terminals; the terminal blocks are
duplicated to enable use of the same MCO 351 in all frame sizes. See illustration to locate the
terminal blocks:
(1) is used with frame sizes A2 and A
(2) is used with frame sizes A5, B1 and B2
X55 = Encoder 2
X56 = Encoder 1
X57 = Digital inputs
X58 = 24VDC supply
X59 = Digital outputs
2.2.5. General Technical Data
− All inputs, outputs and supply voltages are protected against short circuit.
− All inputs, outputs and supply voltages are galvanic isolated from high voltages such as mains
supply and motor voltage (PELV).
− Encoder signals are monitored during operation and standstill.
− All MCO 351 parameters including user defined application parameters are accessible via the
FC 300 Local Control Panel.
− MCO 351 can be combined with other FC 300 options, namely PROFIBUS and DeviceNet inter-
face.
− All digital inputs and outputs are galvanic isolated from the internal electronics and can be
sourced from an external 24V power supply.
Connection Terminals:
Maximum cross section, rigid wire
1.5 mm
2
/AWG 16
Maximum cross section, flexible wire 1.5 mm
2
/AWG 16
Maximum cross section, wire with enclosed core 1.5 mm 2 /AWG 16
Minimum cross section 0.08 2 /AWG 28
Digital inputs:
Number of programmable digital inputs
10
Terminal block X57
Terminal number 1 1) ,2 1) ,3,4,5,6,7,8,9,10
Logic PNP or NPN 1)
Voltage level 0 - 24 V DC
Voltage level 0 - 24 V DC
Voltage level, logic '0' PNP < 5 DC
Voltage level, logic'1' PNP > 10 V DC
Voltage level, logic '0' NPN 2) > 19 V DC
Voltage level, logic '1' NPN 2) < 14 V DC
Maximum voltage on input 28 V DC
1) ) Selected in parameter 5-00 Digital I/O mode.
The digital inputs are galvanic isolated from the internal electronics and can be sourced by an
external 24V power supply.
Digital outputs:
Number of programmable digital outputs
8 (6)
1
Terminal block X59
Terminal number 1
1)
, 2
1)
,3,4,5,6,7,8
Driver type push/pull
MCO351 Positioning Controller 2. Introduction
MG.33.R1.02 - VLT ® is a registered Danfoss trademark
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