LRAM-M-1.0-50/33/89-MR-K | Z-Axis Systems — High Performance Short Stroke Actuators

LRAM-M-1.0-50/33/89-MR-K Technical Data

System Data

Parameter	Symbol	Unit	LRAM
Width	W	mm	50 (without connectors and air hoses)
Length	L	mm	32.6
Height	H	mm	89
Total mass	m	g	280
Moving mass	m_mov	g	10
Maximum stroke	s	mm	±10 (left/right limit position)
Maximum speed	v_max	m/s	1.5
Maximum acceleration (without payload)	a_max	m/s²	1000

System Components

Parameter	Symbol	Unit	LRAM
Encoder
Encoder type			Incremental, magneto-resistive
Resolution		µm	1000
Accuracy (at 3 sigma)		µm	±25
Repeat accuracy		µm	±2
Interface			Sinusoidal signal 1 V_pp (sin/cos)
Air Bearing
Air gap		µm	≈10
Air pressure	p	bar	3 – 4
Air consumption (at 3 bar)		l/h	9

Motor Data

Parameter	Symbol	Unit	LRAM
Motor type			2-phase hybrid stepper motor
Peak force (3 s) at I_p	F_p	N	14
Continuous force at I_c (holding force: 11 N)	F_c	N	10
Peak current	I_p	A_rms	5
Continuous current	I_c	A_rms	3
Power loss at F_c	P_lc	W	2
Motor constant (25°C)	k_m	N/√W	7.01
Electrical resistance, phase to phase (25°C)	R₂₅	Ω	0.25
Electrical inductance	L	mH	0.3
Electrical time constant	τ_el	ms	1.2
Pitch		mm	1
Maximum DC link voltage	U_DCL	V	50

Parts and Interfaces

Parts: Primary part, Secondary part with GMR sensor, Mechanical interface for tools, Encoder interface, Ceramic plate for lateral guidance, Air supply

Motor Terminal Assignment

Connector type: Single conductor, open ends

Pin	Signal
1	Phase 1+
2	Phase 1-
3	Phase 2+
4	Phase 2-

Measuring System

Connector type: Ribbon cable, open ends

Wire	Signal
OG	+5 V
YE	GND
GN	sin
BN	/sin
BU	cos
RD	/cos

A signal adjustment of the sin/cos signals (amplitudes) is recommended.

Drawing

Drawing: LRAM-M-1.0-50/33/89-MR-K