IDEC MicroSmart Pentra - Manual (Page 44)

3: I NSTALLATION AND W IRING
3-16 W EB S ERVER CPU M ODULE U SER ’ S M ANUAL FC9Y-B1278
Example: Installing five expansion RS232C communication modules to the slim type CPU module
In the above example, two more expansion modules can be added, with a maximum total current draw of 30 mA. The
following table shows an example of installing the maximum quantity of expansion modules.
Example: Installing an expansion interface module and RS232C communication modules
When using an expansion interface module, the current draw by the expansion interface module is not included in the
total of internal current draw the current capacity of the CPU module as shown in the example below.
In the additional area on the right of the expansion interface module (FC5A-EXM2, FC5A-EXM1M, and FC5A-EXM1S), a
maximum of eight digital I/O modules can be mounted regardless of the internal current draw of the digital I/O modules.
Expansion RS232C communication modules cannot be mounted on the right of expansion interface module.
For details about the expansion interface modules, see "Expansion Interface Module" of the basic volume (page 2-72).
Module Type No. Quantity
Internal Current Draw
(5V DC)
Total Internal
Current Draw
Expansion RS232C Communication Module
FC5A-SIF2
(Earlier than V200)
5 85 mA 425 mA
Maximum Applicable Expansion Modules (Slim CPU) 7 — 455 mA
Balance 2 — 30 mA
Module Type No. Quantity
Internal Current Draw
(5V DC)
Total Internal
Current Draw
Expansion RS232C Communication Module
FC5A-SIF2
(Earlier than V200)
5 85 mA 425 mA
Transistor Output Module
FC4A-T08S1 1 10 mA 10 mA
FC4A-T32K3 1 20 mA 20 mA
Total 7 — 455 mA
Area Module Type No. Quantity
Internal Current
Draw (5V DC)
Total Internal
Current Draw
Expansion
Expansion RS232C Communication Module
FC5A-SIF2
(Earlier than V200)
5 85 mA 425 mA
Total 5 — 425 mA
Expansion Interface Module FC5A-EXM2 or FC5A-EXM1M + FC5A-EXM1S
Additional
Input Module FC4A-N32B3 4 65 mA 260 mA
Transistor Output Module FC4A-T32K3 4 20 mA 80 mA
Total 8 — 340 mA
• This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or non-hazardous locations only.
• Explosion hazard — Substitution of components may impair suitability for Class I, Division 2.
• Explosion hazard — Do not disconnect equipment unless power has been switched off or the area is known
to be non-hazardous.
Warning
• Make sure that the total internal current draw by all connected expansion modules does not exceed the
allowable current draw of the CPU module. Otherwise the CPU and other modules do not operate
correctly. The CPU module does not detect the excessive current draw.
• The expansion RS232C communication module cannot be mounted on the right of expansion interface
modules (FC5A-EXM2, FC5A-EXM1M, and FC5A-EXM1S). Expansion interface modules can be mounted on
the right of the expansion RS232C communication module.
Caution