I. Model Breakdown (BTM15.2)

BTM15: Series = Operation Panel (BTM = BedienTerminal Modular)

.2: Hardware Version = 2nd Generation

TA: Module 1 = Emergency Stop + Safety Relay (T=Not-Aus, A=Ausgang)

VA: Module 2 = Spindle Speed (Override) (V=Verstellung, A=Achse)

TA: Module 3 = Quick Stop

WE: Module 4 = Feed Override (Feed Rate) (W=Wahl, E=Eingang)

MA: Module 5 = Membrane Keyboard + Status LED (M=Membran, A=Anzeige)

II. Core Specifications

Structure: 5-slot modular panel, can be embedded in machine control cabinet

Interface: Interbus-S (standard), can be equipped with BTV30 system 200 controller

I/O: 16 local inputs / 16 local outputs

Power Supply: 24 VDC ±10%

Protection: Front IP54, Back IP20

Size: Approximately 483 × 135 × 60 mm (19" standard installation)

Weight: ≈ 3.5 kg

Applications: CNC machine tools, machining centers, turning-milling composite, automated production lines

III. Key Functionalities

Emergency Stop (TA): Dual-channel safety circuit, compliant with EN ISO 13849-1 (PL d)

Spindle Speed (VA): 0–150% stepless adjustment, with scale knob

Quick Stop (TA): Independent quick stop circuit, second only to emergency stop in priority

Feed Rate (WE): 0–150% adjustable, suitable for feed / rapid movement

Keyboard (MA): 4×8 film keys, with LED status indication, dustproof and oilproof

IV. Common Confusion Explanations

3TM ≠ BTM: The market often mistakenly writes BTM15.2 as 3TM15.2, which is actually the same product

BTM15.1 vs 15.2: 15.2 is an upgraded version, improving anti-interference, key lifespan, and LED brightness

V. Ordering and Alternatives

Full Model: BTM15.2-TA-VA-TA-WE-MA-2EA (2EA = Standard Interbus interface)

Part Number: R911283258

Alternative Models: BTM15.2-TA-VA-TA-WE-MA (Same function, interface difference)