Foreword
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Table 1 Difference between MD300 and MD320 Functional Modules
MD320 MD300
Input/output terminal
5×DI (bidirectional input
and one high-speed
port),2×AI ˈ 2×DO (one
high-speed port), 1×AOˈ
1×Relay (expandable I/O)
4×DI (single directional input, one
high-speed port), 2×AIˈ1×DOˈ1×AOˈ
1×Relay
Control mode SVC, VC and V/F SVC and V/F
Analog reference
mode
Straight line mode
Multiple-point fold line mode, which is
easy to realize the functions of the
injection molding machine
MS speed
Be able to realize 16S
speed
Be able to realize 4S speed
Simple PLC
Be able to realize 16S
timing operation
None
Swing frequency and
fixed-length control
Available None
Main/auxiliary
reference
Main/auxiliary reference
of any channel
Only A12 can be auxiliary reference
Communication
function
Via the expansion card Via the specialized card
PID control Available None
Multiple-point V/F Available None
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