The Toshiba EX20PLUS/40PLUS series of Programmable Controllers offers a functional, economical, and compact alternative to conventional relay panels and more expensive controllers. These devices are designed for a wide range of OEM and user applications, including small conveyor and palletizer systems, car washes, punch presses, sequence start and shutdown, industrial washing and dyeing, hydraulic and pneumatic control, test equipment, and material handling.
Function Description:
The EX20PLUS/40PLUS controllers are general-purpose programmable controllers that utilize a flexible building block concept for I/O addition. They are programmed in Ladder Logic, a common and intuitive programming language for industrial control. The controllers are capable of handling complex control tasks through various instructions, including timer, counter, transitional contact, step sequencer, master control, jump, flip-flop, and shift register. The PLUS series also includes bi-directional shift registers and I/O update instructions.
Important Technical Specifications:
- Scan Time:
- EX20/EX40: 60µs/step
- EX40H: 3µs/step
- EX20PLUS/EX40PLUS: 60µs/step
- Available Memory:
- EX20/EX40/EX20PLUS/EX40PLUS: 1k steps
- EX40H: 1k/2k steps
- Basic I/O Points:
- EX20/EX20PLUS: 20 (12 input / 8 output)
- EX40/EX40H/EX40PLUS: 40 (24 input / 16 output)
- Max. Expanded I/O:
- EX20/EX20PLUS: 40 (24 input / 16 output)
- EX40/EX40PLUS: 80 (48 input / 32 output)
- EX40H: 120 (72 input / 48 output)
- Input Types:
- Contact: Yes for all models
- 120 Vac: Yes for all models
- 24 Vdc: Yes for EX20/EX40/EX40H; N/A for EX20PLUS/EX40PLUS
- Output Types:
- Relay: Yes for all models
- AC Triac: Yes for EX20/EX40/EX40H; N/A for EX20PLUS/EX40PLUS
- DC Transistor: Yes for EX20/EX40/EX40H; N/A for EX20PLUS/EX40PLUS
- Timers:
- EX20/EX40: 16 (0.1-999.9s)
- EX40H: 64 (0.1-999.9s)
- EX20PLUS/EX40PLUS: 56 (0.1-999.9s) and 8 (0.01-99.99s). (Only 40 if Analog Input used)
- Counters:
- EX20/EX40: 16 (1-9999)
- EX40H: 64 (1-9999)
- EX20PLUS/EX40PLUS: 64 (1-9999). (Only 32 if High Speed Counter used)
- High Speed Counter (HSC):
- EX20/EX40/EX40H: N/A
- EX20PLUS/EX40PLUS: 4kHz max, Up/down, 4/8 digits
- Internal Relays:
- Retentive: 128 for all models
- Non-retentive: 128 for EX20/EX40/EX40H; 112 for EX20PLUS/EX40PLUS
- Special purpose: N/A for EX20/EX40/EX40H; 16 for EX20PLUS/EX40PLUS
- PROM Operation:
- Read/Write/Erase: RM64/16 /17/66 for EX20/EX40/EX40H; RM64/16 /17/66 for EX20PLUS/EX40PLUS (Write/Erase are RM17/66 for PLUS models)
- Change T/C presets: N/A for EX20/EX40/EX40H; Yes for EX20PLUS/EX40PLUS (Requires Ver. 2.3 Programmer)
- Run without battery: N/A for EX20/EX40/EX40H; Yes for EX20PLUS/EX40PLUS
- Analog Input (Option):
- 2 channels, 0-5Vdc, 0-10Vdc, or 0-20mA (only one range/unit).
- Program any point on analog range.
- Computer Linkage: Up to 16 units on one RS422 network.
- Critical I/O Update: Ensures timely updates of critical inputs and outputs.
- Bi-directional Shift Register: Available in PLUS series.
- Timers: 0.01 Second Timers in PLUS series.
Usage Features:
- Programming: Programs are developed using Ladder Logic. The EX-PDD (Program Development and Documentation System) software runs on IBM-PC compatible computers and allows for comprehensive program creation, documentation, and debugging. This includes displaying 8 lines and 10 columns, I/O force, block monitor, trace monitor, and the ability to insert/delete columns, rows, and screens.
- Peripherals:
- LCD Programmer: A compact handheld device for programming contacts and coils, monitoring timers and counters, and verifying contact closures and coil energization.
- Timer/Counter Access Unit (TCAU): Used to change and monitor preset timer/counter values and elapsed time/count.
- PROM Module: Allows program storage and operation of the controller without a battery. It also enables changing timer/counter presets during operation.
- Expansion Units: Available in 8-point, 20-point, and 40-point configurations, offering flexibility to customize I/O based on application needs. The EX08 Expansion Unit can be configured for 8 inputs, 8 outputs, or 4 inputs and 4 outputs.
- Analog Input Unit: Provides 2 channels for analog input, supporting 0-5Vdc, 0-10Vdc, or 0-20mA.
- Computer Link Unit: Facilitates communication between the PLC and a personal computer.
- Printer Interface Unit: For printing program documentation.
- High Speed Input: 4KHz input with up/down counter, 4/8 digits.
- High Performance Software: Includes eight 0.01 sec timers, up/down counter, bi-directional shift register, and critical I/O update. All instructions used on EX20/40/40H are supported.
- Documentation: Supports documentation by IBM personal computer, including page, circuit, line, and device commentary in ladder-diagram printouts.
Maintenance Features:
- PROM Write & Erase: Built-in capability to write and erase programs in PROM, allowing for easy program updates and storage without external devices.
- Battery-Free Operation: The PLUS series can run without a battery when using a PROM module, reducing maintenance requirements.
- Monitoring Capabilities: The LCD Programmer and TCAU allow for real-time monitoring of I/O status, timer/counter values, and program execution, aiding in troubleshooting and maintenance.
- NEMA 12 Mounting Bracket: A special bracket is available to hold the TCAU or LCD Programmer, providing a gasketed, positive seal and limited access through a key and lock, which protects the device in industrial environments.
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