Mitsumi electronic MELSEC FX1S - page 71

FX1S Series Programmable Controllers Outputs 6

6-9

1

2

3

4

5

6

7

8

6.3.2 External wiring precaution

1) Contact protection circuit for inductive loads

Transistor outputs use internal zener diode (50V)

as protection circuitry. When driving the inductive

load with transistor output, a reverse-current

protection diode can be installed in parallel with the

load if necessary.

The reverse-current protection diode needs to satisfy the following specifications.

- Choose a commutating diode that has a reverse voltage strength over 5 - 10 times the

load voltage, and a forward current over the load current.

2) Mechanical Interlock

Ensure all loads are applied to the same side of

each PLC output, see previous figures. Loads

which should NEVER simultaneously operate

(e.g. direction control of a motor), because of a

critical safety situation, should not rely on the

PLC’s sequencing alone. Mechanical interlocks

MUST be fitted to all critical safety circuits. (See

proceeding figure.)

DC (+) DC (-)

PLC

output

Inductive load

Reverse-current

protection diode

PLC output

MC1

Forward

operation

MC2 LSF

MC1MC2 LSR

PLC output

Reverse

operation

Mechanical

interlock

Contents

Main FX1S Series Programmable Controllers Foreword FX1S Series Programmable Controllers Hardware Manual Guidelines for the Safety of the User and Protection of the FX1S. Page Page Marine standard Note Concerning the CE Marking EMC Models : MELSEC FX2NC series manufactured from October 1st, 2002 FX2NC-232ADP FX2NC-485ADP LVD Page Page Page Table of Contents Page Page Page Page Page 1-1 1. Introduction (2.96) Table 1.1:AC Power, Relay Output Units 0.30 (0.66) 0.40 (0.88) Table 1.3:DC Power, Relay Output Units +10%, -15% Table 1.4:DC Power, Transistor Output Units +10%, -15% 1-3 Figure 1.1: FX1S Outline Drawing Dimensions: mm (inches) W W-8(0.32") ES/UL,ESS/UL:75(2.96") DS,DSS :49(1.93") 82(3.23") 90(3.55") 2-4.5 (0.17") *1 The communication adapter needs to connect via an FX1N-CNV-BD to the FX1S Series PLC. Table 1.5: Expansion Board and Communication Adapter Page 1.2 World Specification Table 1.7: World / Japanese Specifications Page 1-8 1.4 Configuration Figure 1.2: Schematic System Page Table 1.9: Configuration Notes Table 1.10: Connection Ports Note Caution 1.5 Backup Data 2-1 2. Terminal Layouts -14MR-ES/UL -10MR-ES/UL -30MR-ES/UL -20MR-ES/UL 2.2 FX1S-**MR-DS Figure 2.2: Terminal Layouts, Relay Outputs, DC Power -30MR-DS -20MR-DS -10MR-DS 2.3 FX1S-**MT-DSS Figure 2.3: Terminal Layouts, Transistor Outputs, DC Power -30MT-DSS -20MT-DSS -10MT-DSS 2.4 FX1S-**MT-ESS/UL Figure 2.4: Terminal Layouts, Transistor Outputs, AC Power -20MT-ESS/UL -10MT-ESS/UL -30MT-ESS/UL Page 3-2 3.1 Product Outline -14MR Figure 3.1: Features of the FX1S PLC Table 3.1: Feature Table FX Page 3-4 3.3 General Specifications Table 3.3: General Specifications Page Page Page 3-8 3.5 DIN Rail Mounting = 4.5 mm (0.17") 3.6 Direct Mounting Table 3.4: Hole positions UNIT mm inches 0.2 0.01 A = W-8mm (0.32") FX1S-10M = 4.5 mm (0.17") Table 3.5: Hole positions 3.7 Termination of Screw Terminals Page Page Page Page Page Page Page 4.3 Power Supply 4.4 Power Supply Characteristics *1 Includes the input current (5 or 7mA per point). Table 4.1: AC Input Power Requirements, FX Page Page Page Page Page Page Page Page Page Page Page Page Bad Good Page Page Page Page Page 7.2 ERROR LED ON (CPU ERROR) Table 7.2: Error LED Checks 99 8 Page 7.5 Operation and Error Flags Table 7.3: Operation and Error Flags Page 7.7 Error Registers Table 7.5: Error Registers Page 7.9 Instruction List Table 7.7: Numerically Sorted Table 7.8: Alphabetically sorted Page Page Page Page Page Page Page Page Page Page HARDWARE MANUAL