We offer a customized replacement solution for the GBAMH.1203P32 (single-turn) and GBMMH.1203P32 (multi-turn) absolute encoders. Both models are designed to replicate the original units’ electrical and mechanical characteristics, featuring Profibus-DP communication, allowing direct integration into existing automation systems without modifying PLC programs or bus configurations. This makes them suitable for retrofits, system upgrades, and spare part applications.
The GBAMH.1203P32 delivers high-resolution optical single-turn feedback with 262,144 steps per revolution (18-bit) and ±0.01° absolute accuracy. The GBMMH.1203P32 provides multiturn absolute feedback, supporting programmable revolutions, preset values, scaling, and selectable rotation direction. Integrated diagnostic functions and a DUO-LED status indicator ensure real-time monitoring of position and operational health.
Mechanically, both encoders feature a Ø58 mm aluminum housing with hollow shaft options (Ø12 mm / Ø14 mm), IP54 protection, and robust resistance to vibration and shock. With operating speeds up to 6000 rpm and wide temperature tolerance, these replacements provide reliable and long-term performance in demanding industrial environments.
Technical Data
| Parameter | Value / Description |
| Voltage supply | 10...30 VDC |
| Reverse polarity protection | Yes |
| Consumption w/o load | ≤100 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 | ±0.01 |
| 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 | 58 mm |
| Shaft | 12 mm hollow shaft / 14 mm hollow shaft |
| Protection DIN EN 60529 | IP 54 |
| Operating speed | ≤ 6000 rpm / ≤ 6000 rpm |
| Rotor moment of inertia | 20 gcm |
| Materials | Housing: aluminium; Flange: aluminium; Bus cover: aluminium |
| Operating temperature | -25...+85 °C/ -40...+85 °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 |
