Rslm20 Scale Technical Specifications; Reference Mark; Limit Switches; Relm20 Scale Technical Specifications - Renishaw VIONiC RSLM20 Installation Manual

RSLM20 scale technical specifications

Form (H × W)
Pitch
Accuracy (at 20 °C)
Supplied lengths
Material
Coefficient of thermal expansion
(at 20 °C)
Mounting
Mass
Storage

Reference mark

Type IN-TRAC auto-phase optional reference mark, no physical adjustments required
Position RSLM20 Midpoint of scale length
RSLE20 (Option A) – 20 mm from end of scale (for use with 10 mm limits)
RSLE20 (Option B) – 70 mm from end of scale (for use with 20 mm and
50 mm limits)
RSLC20 Selectable reference marks every 200 mm
Phasing
Auto-phased by readhead calibration routine
Repeatability Repeatability to unit of resolution throughout specified temperature range

Limit switches

Type Magnetic actuators; with dimple triggers Q limit, without dimple triggers P limit
('VIONiC readhead installation drawing', page 4)
Trigger point The limit output is nominally asserted when the readhead limit switch sensor passes
the limit magnet leading edge, but can trigger up to 3 mm before that edge
Mounting Customer placed at desired locations
Repeatablity < 0.1 mm
VIONiC RSLM20/RELM20 installation guide
1.5 mm × 14.9 mm
20 µm
±1.5 µm for lengths up to 1 m
±2.25 µm for lengths from 1 m to 2 m
±3 µm for lengths from 2 m to 3 m
±4 µm for lengths from 3 m to 5 m
(includes slope and linearity)
Calibration traceable to International Standards
20 mm to 5 m (available in increments of 10 mm)
Hardened martensitic stainless steel
10.1 ±2 µm/m/°C
Epoxy datum point and adhesive tape (nominal thickness
0.2 mm) or datum clamp and mounting clips
172 g/m
Lengths over 1.13 m are coiled (> 600 mm diameter)

RELM20 scale technical specifications

Form (H × W)
Pitch
Accuracy (at 20 °C)
(includes slope and linearity)
Supplied lengths
Material
Coefficient of thermal expansion
(at 20 °C)
Mounting
Mass
Reference mark
Type IN-TRAC auto-phase optional reference mark, no physical adjustments required
Position
RELM20 Midpoint of scale length
RELE20 20 mm from end of scale
Phasing Auto-phased by readhead calibration routine
Repeatability Repeatability to unit of resolution throughout specified temperature range
Limit switches
Type Magnetic actuators; with dimple triggers Q limit, without dimple triggers P limit
('VIONiC readhead installation drawing', page 4)
Trigger point
The limit output is nominally asserted when the readhead limit switch sensor passes
the limit magnet leading edge, but can trigger up to 3 mm before that edge
Mounting
Customer placed at desired locations
Repeatablity
< 0.1 mm
1.6 mm × 14.9 mm
20 µm
Certified to ±1 µm for lengths up to 1 m,
±1 µm/m for lengths > 1 m to 1.5 m
Calibration traceable to International Standards
20 mm to 1.5 m (available in increments of 10 mm)
ZeroMet ™ . High stability, low‑expansion nickel‑iron alloy
0.75 ±0.35 µm/m/°C
Epoxy datum point and adhesive tape (nominal thickness
0.2 mm) or datum clamp and mounting clips
184 g/m
20