RSX-7900 Analog 4 … 20 mA Non-Contact Magnetic Angle Sensor

Manufacturer: Novotechnik
Category: Displacement, Encoder, Absolute Encoder, Single-turn Absolute Encoder, Absolute Magnetic Encoder, Angular displacement sensor, SENSORS

Novotechnik RSX-7900 Analog Magnetic Angle Sensor. Non-contact magnetic angle sensor with shaft.

Non-contact magnetic angle sensor with metal housing, stainless steel shaft on double angular contact bearings and sealing system. Measuring range up to 360°. IP69K protection. 300 N shaft load. Various shafts available.

Key points

Contactless, magnetic encoder; shaft load: 300 N
Measurement angles up to 360°, single and multi-channel versions
Anodized aluminum housing and stainless steel shaft; salt spray resistant
Resolution up to 12 bits; unlimited mechanical rotation
IP69K; life > 100 million movements, even with vibration-damped mounting
Security-related applications according to ISO 13849
EMC: European E1 requirements

Technical Frequently Asked Questions

What can be connected to the RSX-7900 analog magnetic angle sensor?

It can be connected to Novotechnik M12 connectors and cables and Novotechnik rotary sensor couplings and accessories.

How do I order the RSX-7900 analog magnetic angle sensor?

The order code has 7 fields: model, channels, range, ub, signal, feature, and connection. For example, RSX-7911-836-384-651 is the version with a 79 x 35 mm model, shaft-centered housing, Ø 13 x 12 mm shaft with Ø 4.1 mm cross-hole, fully redundant, 360°, 12/24 VDC, 4…20 mA, crossover outputs with channel 1 increasing clockwise, and two unshielded 4-pin M12 connectors. All the options for each field are available in the order code configurator on this page.

Under what conditions does the RSX-7900 analog magnetic angle sensor operate?

Operating temperature: -40 … +85 °C. Protection: IP67 / IP69K (M12 connector: IP67).

Properties

Feature	Specification
Measurement and interface
Exit sign	4 … 20 mA
Burden	Ub > 13 V: ≤ 500 Ω; Ub ≤ 13 V: ≤ 250 Ω
Number of channels	1 / 2
Diagnosis	Activated (in error, the signal is outside the plausible range)
Update frequency	typical 3.4 kHz
Measuring range	60°, 120°, 180°, 240°, 300°, 360°
Absolute linearity, range < 90°	±2% FS
Absolute linearity, range ≥ 90°	±1 % FS
Interlinearity, range < 90°	±4% FS
Interlinearity, range ≥ 90°	±2% FS
Resolution	12 bits
Measure (continued)
Repeatability	typical ≤ ±0.1°
Hysteresis	typ. < ±0.1° (360° range only: typ. < 0.25°; smaller, on request)
Temperature error, 30 … 170°	typ. ±1.2% FS
Temperature error, ≥ 180°	typ. ±0.6% FS
Feeding and protection
Supply voltage Ub	12/24 VDC (8 … 34 VDC)
No-load current consumption	typical 12 mA per channel
Reverse polarity protection	Yes (power lines and outlets)
Short circuit protection	Yes (in front of GND and Ub)
Insulation resistance (500 VDC)	≥ 10 MΩ
Environmental conditions
Working temperature	-40 … +85 °C
Maximum working speed	50 rpm
Vibration IEC 60068-2-6	20 g, 5 … 2000 Hz, Amax = 0.75 mm
IEC 60068-2-27 Shock	50 g, 6 ms
ISO 20653 Protection	IP67 / IP69K (M12 connector: IP67)
Life	> 100 million movements
MTTF (IEC 60050)	741 years (one channel), 742 years (partially redundant, per channel) or 742 years (totally redundant, per channel)
MTTFd (EN ISO 13849-1, parts count, no load)	1074 years (one channel), 1076 years (partially redundant, per channel) or 1076 years (totally redundant, per channel)
Functional safety	Security-related applications according to ISO 13849 after customer validation; data (DCavg…) on request
Electromagnetic compatibility
ISO 10605 ESD (component)	8 kV
ISO 11452-2 Radiated HF fields	100 V/m
ISO 11452-4 BCI (mass current injection)	100 mA
CISPR 25 Radiated emission	Level according to ISO 13766-1
ISO 7637-2 Impulses in the feed lines (1, 2a, 2b, 3a, 3b)	Level 3
ISO 7637-3 Impulses on output lines	Level 4
ISO 16750 Impulses in feeding	Startup profile: level 4 at 12 V / level 2 at 24 V; Load dump A: +101 V at 12 V / +202 V at 24 V
Mechanical data
Housing	Anodized AlMgSi1 aluminum, resistant to salt spray
Axis	Stainless steel X10CrNiS18-9 (No. 1.4305)
Fixation	4 M6 screws, min. thread depth 15 mm
Tightening torque of the fastener	800 ± 100 Ncm
Bearing	double angular contact bearing
Mechanical tour	Continuous
Allowable load on the shaft (static or dynamic), axial and radial	300 N
Starting torque	≤ 4 Ncm
Weight	approx. 500 g
Electrical connection	M12x1 connector, A coding, or cable with cable gland, 4x 0.5 mm² (AWG 20), TPE, unshielded

Option	Meaning
Example: RSX-7911-836-384-651 = 79 x 35 mm model, shaft-centered housing, Ø 13 x 12 mm shaft with Ø 4.1 mm cross-hole, fully redundant, 360°, 12/24 VDC, 4 … 20 mA, crossover outputs with channel 1 increasing clockwise and 2 unshielded 4-pin M12 connectors.
1. Model and size
79	79 x 35 mm
2 · Housing
1	Centered on the axis side
4	Centered on the axis and on the side of the lid
3 · Axis
1	Ø 13 x 12 mm with transverse drill Ø 4.1 mm
3	Ø 10 x 16 mm with countersink Ø 4.5 x 90°
7	Ø 13 x 12 mm with Z-IPX-M21 drive plate mounted
4. Number of channels
6	One channel (1x Ub; 1x output)
7	Redundant par. (1x Ub; 2x exit)
8	Tot. redundant (2x Ub; 2x output)
5 · Measurement range
06	60°
12	120°
18	180°
24	240°
30	300°
36	360°
6 · Supply voltage Ub
3	12/24 VDC
7 · Output signal
8	4 … 20 mA
8 · Output characteristic
1	Clockwise increasing
2	Crescent in a counterclockwise direction
3	Cross-outputs, channel 1 increasing clockwise (partially redundant)
4	Cross-outputs, channel 1 increasing clockwise (totally redundant)
9. Electrical connection
252	A canal or park. redundant: 1x 2 m 4-pole cable, unshielded
551	One redundant channel or parcel: 1x unshielded 4-pin M12 connector
352	Tot. redundant: 2x 2 m 4-pole cable, unshielded
651	Total redundant: 2x unshielded 4-pin M12 connector
The code is formed using one option from each field, in the order shown in the example. Contact us and we will confirm the exact reference.