We provide a customized replacement solution for the GBAMH.B203P32 (single-turn) and GBMMH.B203P32 (multi-turn) absolute encoders. Both models are designed to replicate the original units’ electrical and mechanical specifications, featuring Profibus-DP communication, which enables seamless integration into existing automation systems without changes to PLC programs or bus settings. This makes them ideal for retrofits, maintenance, and system upgrades.
The GBAMH.B203P32 offers high-resolution optical single-turn feedback with 262,144 steps per revolution (18-bit) and ±0.01° absolute accuracy. The GBMMH.B203P32 delivers multiturn absolute feedback, supporting programmable revolutions, preset values, scaling, and rotation direction. Integrated diagnostic functions and a DUO-LED status indicator provide clear monitoring of encoder health and operational status.
Mechanically, both encoders feature a Ø58 mm aluminum housing with hollow shaft options (Ø12 mm / Ø14 mm), IP54 protection, and high resistance to vibration and shock. With operating speeds up to 6000 rpm and wide temperature tolerance, these replacements ensure reliable performance in demanding industrial automation applications.
Note: Please verify shaft diameter and mounting configuration before installation to ensure proper fit.
Technical Data
| Parameter | Value / Description |
| Voltage supply | 10...30 VDC |
| Reverse polarity protection | Yes |
| Consumption w/o load | $\le 100 \text{ mA}$ (24 VDC) |
| Initializing time (typ.) | 250 ms after power on |
| Interfaces | Profibus-DPV0, CANopen, DeviceNet |
| User address | Rotary switch in bus cover |
| Steps per turn | 262144 / 18 bit |
| Absolute accuracy | $\pm 0.01^\circ$ |
| Sensing method | Optical |
| Code | Binary |
| Code sequence | CW/CCW programmable |
| Interference immunity | DIN EN 61000-6-2 |
| Emitted interference | DIN EN 61000-6-4 |
| Programmable parameters | Steps per revolution, Number of revolutions, Preset, Scaling, Rotational direction |
| Diagnostic functions | Position or parameter error, Multiturn sensing |
| Status indicator | DUO-LED integrated in bus cover |
| Approval | UL approval / E63076 |
| Parameter | Value / Description |
| Housing | $\varnothing 58 \text{ mm}$ |
| Shaft | $\varnothing 12 \text{ mm}$ hollow shaft / $\varnothing 14 \text{ mm}$ hollow shaft |
| Protection DIN EN 60529 | IP 54 |
| Operating speed | $\le 6000 \text{ rpm}$ (mechanical) / $\le 6000 \text{ rpm}$ (electric) |
| Rotor moment of inertia | $20 \text{ gcm}^2$ |
| Materials | Housing: aluminium; Flange: aluminium; Bus cover: aluminium |
| Operating temperature | $-25...+85 \text{ °C}$ / $-40...+85 \text{ °C}$ (optional) |
| Relative humidity | 95 % non-condensing |
| Resistance | Vibration: DIN EN 60068-2-6 (10 g, 16-2000 Hz) Shock: DIN EN 60068-2-27 (200 g, 6 ms) |
| Weight approx. | 600 g |
| E-connection | Bus cover |
