Innovative rotary speed sensors for rail vehicles
Metro Magazine
Absolute Rotary Pulse Encoder Gel 15xF
General Information
FunctionThe Lenord & Bauer Rotary Pulse Encoder GEL 15XF series has been developed with the intention of enabling the user to change plant-specific parameters. The absolute encoder can be programmed by means of a PC via the encoder programming line. The selected parameters stored in an E2PROM in the absolute encoder are protected against power failures. The programming software BB 150 (3 1/2" diskette, 1.4 MB) for menu-guided programming runs on any IBM-compatible PC-AT with a main memory of 512 KB and DOS 3.1or higher. The RS 485 interface signals are converted to the PCcompatible RS 232 interface in the converter cable.
The Set Reference mode permits setting of reference points 1 or 2. The reference values can be programmed by the user within the total number of steps.
In the Up-Down Mode, the output value of the absolute encoder can be increased or reduced by the user via the function inputs. The output change speed increases with the duration of signal application. Applying a logic 0 for a short time reset the output change speed. The set value is stored after about 6 seconds before the absolute encoder switches over to the normal coding mode. These functions can be used for electronic setting such as for changing the zero setpoint.
Programmable Parameters
- Resolution: 0.0002 to 4096.0000 steps/360°
- Measuring range: 1,2,4 ... 4,096 revolutions
- Output code: Gray, Gray-Tanne, BCD, Binary or Binary-Tanne
- Code direction: CW or CCW
- Logic polarity: positive or negative (only with parallel interface)
- Parity bit: ODD or EVEN
- Setmodes: Set Reference or Up-Down mode
- Reference value 1: 0 to total number of steps
- Reference value 2: 0 to total number of steps
- Offset value: - 32,768 ... + 32,768
- Length of register: 13, 16, 25 or 32 Bit (only with SSI interface)
- Monostable time: 1 ... 682 µs (only with SSI interface)
- Identification number: 0 ... 65,535 (ID number)
Setmodes
The functions Set Reference or Up-Down Mode can be programmed via inputs FE1 and FE2.
| FE1 | FE0 | Setmode: Set Reference |
| 0 | 0 | normal coding mode |
| 0 | 1 | set reference point 1 |
| 1 | 0 | set reference point 2 |
| 1 | 1 | output value stored (latch) |
| FE1 | FE0 | Setmode: Up-Down mode |
| 0 | 0 | reduce output value and set (down) |
| 0 | 1 | increase output value and set (up) |
| 1 | 0 | set reference point 2 |
| 1 | 1 | output value stored (latch) |
Timing Diagrams
tV: delay = 1.1 ms max.
tH: hold = 750 µs min.
tW: wait = 70 ms min.
tR: response = 60 ms
tLA: latch response = 750 µs max.
tD: time difference of monostable circuits = 100 µs max.
tEN: response = 100 µs max.
Technical Data
| Electrical Data | |
| Sensor system | GaAlAs-diode-photo-array, photo-transistors |
| Measuring step deviation | ≤ ± 2' 38" |
| Parallel outputs | open collector, open emitter |
| Serial outputs (SSI) | RS 422 / 485 |
| Parallel output frequency | max. 30 kHz at10 bits/360° |
| Output code | Gray, Gray-Tanne, Binary, Binary-Tanne, BCD |
| Signal input E6 (code direction) | CW or CCW |
| Signal input E6 (latch) | via function inputs (FE) |
| Signal input E6 (enable) | circuit active or inactive |
| Operating voltage range | + 11 V ... + 30 V DC |
| Operating current | 80 mA typical, 120 mA max. |
| Electromagnetic compatibility (EMC) | electromagnetic emissions according to EN 61000-6-4 electromagnetic immunity according to EN 61000-6-2 |
| Mechanical Characteristics | |
| Operating speed | 3,000 min-1 max. (permanent) 4,000 min-1 max. (short-time) Values for maximum shaft load and operating temperatures -20°C ... +60°C. Higher values possible under less stringent conditions. |
| Angular acceleration | 105 rad/s2 max. |
| Moment of inertia (rotor) | 50 gcm2 |
| Operating torque | ≤ 5 Ncm at a speed of 1,000 min-1 |
| Starting torque | ≤ 1 Ncm |
| Admissible load on shaft | 250 N axial and radial |
| Bearing life | 109 revolutions |
| Weight | approx. 0.7 kg |
| Ambient Conditions | |
| Operating temperature range | -20°C ... +60°C (optional -40°C ... +85°C) |
| Storage temperature range | -25°C ... +70°C |
| Admissible relative humidity | 85 % without condensation |
| Schock resistance | 200 m/s2; 11 ms (DIN IEC 68) |
| Vibration resistance | 5 Hz ... 1,000 Hz; 100 m/s2 (DIN IEC 68) |
| Protection class (DIN 40050) GEL 152/158 GEL 154 |
IP 65 (Nilos ring) IP 66 (radial packing ring) |
Diagram
Input/Output circuits - Synchronous Serial Interface (SSI)
Synchronous Serial Interface (SSI)
Advantages:
- lower costs and and reduced work due to minimized wiring
- increased data safety due to repeat transmissions
- maximum noise immunity due to symmetrical and synchronous data signals
The parallel data word generated by the encoder is converted into a serial data word and transmitted synchronously with the clock signal to the receiver electronics.
Pin Layout
Parallel Interface
Serial Interface - SSI
Gel 152F & Gel 15xF30
Gel 154F & Gel 15xF30
Gel 158F
Available types, Accessories
Available Types| Type | Output circuit | Included in scope of supply |
| GEL 152 F00 | 0 (pull-down) |
37-pole sub-miniature D-mating connector |
| GEL 154 F00 | 0 (pull-down) |
37-pole sub-miniature D-mating connector |
| GEL 158 F00 | 0 (pull-down) |
37-pole sub-miniature D-mating connector |
| GEL 152 F20 | 2 (pull-up) |
37-pole sub-miniature D-mating connector |
| GEL 154 F20 | 2 (pull-up) |
37-pole sub-miniature D-mating connector |
| GEL 158 F20 | 2 (pull-up) |
37-pole sub-miniature D-mating connector |
| GEL 152 F30 | 3 (SSI) |
12-pole round connector, straight type GG 723.12 alternatively round connector, right-angle GW 723.12 (optional) |
| GEL 154 F30 | 3 (SSI) |
12-pole round connector, straight type GG 723.12 alternatively round connector, right-angle GW 723.12 (optional) |
| GEL 158 F30 | 3 (SSI) |
12-pole round connector, straight type GG 723.12 alternatively round connector, right-angle GW 723.12 (optional) |
Accessories
VK 150.1 - cross-over serial connecting cable (2 m)
VK 150.2 - connecting cable (SSI) 0.5 m
VK 150.3 - connecting cable (parallel) 0.5 m
KM 150.0 - converter module incl. cross-over serial cable VK 150.1 (2 m)
KM 150.1 - converter module (SSI) with connecting cable VK 150.2 (0.5 m) incl. cross-over serial cable VK 150.1 (2 m)
KM 150.2 - converter module (parallel) with connecting cable VK 150.3 (0.5 m) incl. cross-over serial cable VK 150.1 (2 m)
BB 150 - software for programming of absolute encoder parameters
Spare parts
GG 723.12 - 12-pole round connector, straight (SSI)
GW723.12 - 12-pole round connector, right-angle (SSI)
DB 37S - 37-pole sub miniature D-connector, female
| Parallel interface | SSI interface | ||||
| Parameter | Range of values | Basic programming | Preprogramming | Basic programming | Preprogramming |
| Resolution | 0.0002 ... 4,096.000 steps /360° 1) | 4,096 | 4,096 | ||
| Measuring range | 1, 2, 4 ... 4096 revolutions | 4,096 | 4,096 | ||
| Output code | Gray-, Binary or BCD Gray-Tanne, Binary-Tanne | Gray | Gray | ||
| Code direction | CW / CCW | CW | CW | ||
| Logic polarity | positive or negative | positive | |||
| Parity bit | ODD or EVEN | EVEN | EVEN | ||
| Set modes | preset or Up-Down mode | preset | preset | ||
| Reference value 1 | 0 ... total no. of steps | 0 | 0 | ||
| Reference value 2 | 0 ... total no. of steps | 0 | 0 | ||
| Offset value | -32,768 ... + 32,768 | 0 | 0 | ||
| Length of register | 13, 16, 25 or 32 bits | 32 | |||
| Monostable time | 1 ... 682 µs | 20 | |||
| Identification no. | 0 ... 65,535 | 0 | 0 | ||
1) with Gray-Tanne or Binary-Tanne only
Unless otherwise specified in the Pre-Programming column, the absolute encoders are supplied with the indicated Basic Programming.
