Expansion Unit - Hitachi HIDIC MICRO-EH Applications Manual

4.5

Expansion Unit

Name and function of each part
10] Mounting
hole
3] Expansion connector cover
(left side)
No. Item
Explanation of operation
1] POW LED
2] OK LED
3] Expansion cover
(Left side)
4] Input terminals
5] Output terminals
6] Power terminal
7] Expansion cover
(Right side)
8] Dummy cover
9] Terminal cover
10] Mounting hole
11] DIN rail
installation clip
9] Terminal cover
Detailed explanation
Operations are performed according to the contents of the program created
by the user.
The programming unit connected to the CPU module communication port
writes and reads the user program.
Memory is installed inside the CPU module in which the user program and
internal output information are stored.
Lighting when the power is supplied.
Lighting at normal operation.
Cover for expansion connector
Used when connecting to the expansion cable from the front unit.
Terminals for wiring the external input units.
Recommended terminals are shown in the figure
to the right.
One piece of AWG14 to AWG22 (2.1 to 0.36
2
mm ) or two pieces of AWG16 to AWG22 (1.3
2
to 0.36 mm ) per terminal may be wired.
Terminals for connecting the external load. The wiring specification is the
same as for the input terminals.
Terminal for connecting the power supply. The wiring specification is the
same as for the input terminals.
Cover for expansion connector
Used when connecting to the next unit.
Cover used as a dummy.
Cover for terminals
Used when installing the PLC with screws
Used when installing the PLC on a DIN rail
Chapter 4 Product lineup and wiring
Type EH-*14ED** (same dimension as 14 pts. basic unit)
EH-*28ED** (same dimension as 28 pts. basic unit)
EH-*6EAN (same dimension as 14 pts. basic unit)
4] Input terminals
1] POW LED
2] OK LED
7] Expansion connector cover
(right side)
8] Dummy cover
5] Output terminals
11] DIN rail installation clip
6] Power terminal
4-6
Above picture is 14 points module
Remarks
See Chapter 10.
See Chapter 10.
(Make sure that the terminals will not
6
disengage due to loose screws.)
6 (Recommended)
See Chapter 10.
See Chapter 10.
See Chapter 10.
See Chapter 10.
See Chapter 10.