General Specifications; Scale Technical Specifications; Reference Mark; Limit Switches - Renishaw VIONiC RTLC20-S Installation Manual

General specifications

Power supply
5V −5%/+10% Typically 200 mA fully terminated
Ripple 200 mVpp maximum @ frequency up to 500 kHz
Temperature
Storage −20 °C to +70 °C
Operating 0 °C to +70 °C
Humidity
Sealing
Acceleration (system) Operating 400 m/s², 3 axes
Shock (system) Operating 500 m/s², 11 ms, ½ sine, 3 axes
Vibration (system)
Operating 100 m/s² max @ 55 Hz to 2000 Hz, 3 axes
Mass Readhead 8.6 g
Cable 26 g/m
Readhead cable
Maximum readhead
cable length *
*
Extension cables available. Contact your local Renishaw representative for details.
CAUTION: Renishaw encoder systems have been designed to the relevant EMC standards, but must
be correctly integrated to achieve EMC compliance. In particular, attention to shielding arrangements is
essential.
VIONiC RTLC20-S installation guide
Power from a 5 Vdc supply complying with the requirements for
SELV of standard IEC 60950-1
95% relative humidity (non‑condensing) to IEC 60068‑2‑78
IP40
Single-shielded, outside diameter 4.25 ±0.25 mm
Flex life > 20 × 10 6 cycles at 30 mm bend radius
UL recognised component
3 m

Scale technical specifications

Form (H × W)
Pitch
Accuracy at 20 °C
(includes slope and linearity)
Linearity
Supplied lengths
Material
Coefficient of thermal expansion
(at 20 °C)
Installation temperature
Datum fixing
†
For lengths > 2 m FASTRACK with RTLC20 is recommended. Refer to the VIONiC RTLC20/FASTRACK
linear encoder system installation guide (Renishaw part no. M-6195-9225).

Reference mark

Type
Selection
L ≤100 mm Single reference mark at scale centre
L >100 mm Reference marks at 50 mm spacing (first reference mark
Repeatability

Limit switches

Type
Trigger point
Mounting
Repeatablity
0.4 mm × 8 mm (including adhesive)
20 µm
±5 µm/m calibration traceable to International Standards
±2.5 µm/m achievable with 2 point error correction
20 mm to 10 m † (> 10 m available on request)
Hardened and tempered martensitic stainless steel fitted
with a self-adhesive backing tape
10.1 ±0.2 µm/m/°C
15 °C to 35 °C
Loctite 435 with A-9585-0028 clamp
Customer selected IN-TRAC reference mark, directly
embedded into incremental track. Bi-directional position
repeatability.
Single reference mark selection by selector magnet
(A-9653-0143) customer positioned
50 mm from scale end)
Unit of resolution repeatability (bi-directional) across full
system rated speed and temperature ranges
Magnetic actuators; with dimple triggers Q limit, without
dimple triggers P limit
(see 'RTLC20-S scale installation drawing' on page
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
Customer placed at desired locations
< 0.1 mm
4).
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