2.7.1. Standard RS 485-Interface
I/O Number
Designation
Description
61
Ground RS 485
Not used
68
RS 485-P
Not used
69
RS 485-N
Not used
2.7.2. MCO 350 Terminal X57
I/O Number Designation
Description
1
I1 - Sync-Start
Start and stop of synchronisation. Input
1 must be toggled if synchronisation
was interrupted by an error or by input
27 (motor coast). Behaviour at stop can
be selected via parameter 1901.
2
I2 - Take over gear ratio
Activates the gear ratio selected at Ter-
minals 9 and 10.
3
I3 - Start/Stop virtual master
Test run; Program 1:
Start test run
with virtual master.
Synchronous op-
eration; Program 2:
The virtual mas-
ter is accelerated up to the set pulse
frequency, or stopped, with the set
ramp time.
4
I4 - Hold
The drive is held at a programmable
(parameter 1903) speed, or the current
speed (parameter 1902 = 1). Synchro-
nous control is not activated.
5
I5 - Master marker input
When using external marker signal for
the master drive it must be connected
to this input.
6
I6 - Slave marker input
When using external marker signal for
the slave drive it must be connected to
this input.
7
I7 - Measuring of the master marker
interval
Test run; Program 1:
Measuring of the master marker interval
is started.
Home switch
Synchronous operation; Program
2:
If a home position is to be attained, the
home switch must be connected here.
The signal must show a rising edge
8
I8 - measuring of the slave marker
interval
Test run; Program 1:
Measurement of the slave marker inter-
val is started.
I8 - VLT mode selection
Synchronous operation; Program
2:
Switches the VLT to normal frequency
converter operation. The settings for
this operating mode are to be made in
Parameter set-up 2. Refer to the VLT
Automation Drive Product Manual.
9
Gear ratio 2
0
Gear ratio least significant bit
10
Gear ratio 2
1
Gear ratio most significant bit
2. Introduction
Syncronising Controller MCO 350 Operating
Instructions
22
MG.33.Q1.02 - VLT
®
is a registered Danfoss trademark
2