Frequently Asked Questions (FAQ) — ABB PM825
Q1: What power supply does the PM825 need?
A1: Operates on 24 V DC (range 19.2–30 V), and often supports dual‑input redundancy.
Q2: What processor powers the PM825?
A2: Uses a 25 MHz Motorola MC68360 16‑bit RISC CPU.
Q3: How much memory does it have?
A3: Offers around 256 KB RAM and 512 KB flash for logic and firmware.
Q4: What communication protocols are supported?
A4: Interfaces include RS‑232, RS‑485, Profibus, Modbus, Ethernet (model-dependent).
Q5: How many I/O modules can it manage?
A5: Supports up to 24 I/O modules (12 electrical, 12 optical).
Q6: What is its operating temperature range?
A6: Designed for –40 °C to +70 °C environments.
Q7: What are its physical dimensions and weight?
A7: Measures approximately 225 × 108 × 135 mm, weighing about 1 kg.
Q8: What kind of protection rating does it have?
A8: Standard level is IP20; higher ratings may be available in variants.
Q9: Is hot‑swapping of PM825 supported?
A9: No, modules typically must be powered down before removal or installation.
Q10: Which sectors commonly use the PM825?
A10: Ideal for power plants, manufacturing lines, oil & gas, chemical plants, and water treatment systems.
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