Siemens 505-4916A Relay Output

Siemens PPX:505-4916A TI505 Relay Output Module is a 16‑channel digital relay output block for the TI505 PLC, providing isolated Form‑A (normally open) floating relay contacts. The 16 outputs support loads in the 24–230 VAC or 6–24 VDC range, enabling either AC or DC control from a single TI505 processor. Each output is UL class 2 rated at 0.5 A, making it suitable for low‑power signaling and control circuits in industrial automation. The module is powered from the TI505 backplane with a base power draw around 2.5 W and offers fast switching with a maximum 10 ms transition time (10 ms on to off, 10 ms off to on). As a single‑wide PPX module, it expands the processor’s I/O capacity without external gateways, ideal for discrete control of devices such as relays or indication loads in compact cabinets. The 4916A designation confirms Form‑A operation, while related models like PPX:505–4908 use Form‑C outputs, providing flexibility for NO/NC configurations in interlock or signaling schemes. This Siemens solution integrates with the TI505 platform’s backplane timing and power characteristics, delivering consistent, repeatable relay switching across all 16 outputs in a compact, rack‑level package.