Readhead Mounting/Installation; Electrical Connections; Scale Technical Specifications - Renishaw EVOLUTE FASTRACK Installation Manual

Readhead mounting/installation

Mounting brackets
The bracket must have a flat mounting surface, enable conformance to the installation tolerances, allow
adjustment of the rideheight of the readhead, and be sufficiently stiff to prevent deflection of the readhead
during operation.
Readhead set-up
Ensure that the scale, readhead optical window and mounting face are clean and free from obstructions.
To set nominal rideheight for RTLA50/FASTRACK installations, use the red 0.6 mm readhead spacer on
FASTRACK surface to set rideheight. Adjust the readhead to maximize the signal strength along the full
axis of travel to achieve a Green LED.
Readhead set-up LED status
Green Orange Red
NOTE: A position error will trigger the
set-up LED to flash continuously until
the error is no longer present AND:
1. Power has been cycled OR
2. A position request has been
received from the controller.
Roll
0° ±0.5°
IMPORTANT: Only use
0.6 mm red spacer.
Rideheight
0.6 ±0.25 mm
(from FASTRACK face)
EVOLUTE RTLA50/FASTRACK installation guide
Yaw
0° ±0.75°
Pitch
0° ±0.5°

Electrical connections

EVOLUTE grounding and shielding
Readhead
Connector
Shield
IMPORTANT: The shield should be connected to the machine earth (Field ground).
IMPORTANT: If the connector is modified or replaced, the customer must ensure both 0 V cores
(White and Green) are connected to 0 V.
*For maximum extension cable length please consult your local Renishaw representative.

Scale technical specifications

RTLA50
Form
Datum fixing
Material
Accuracy (at 20 °C)
Coefficient of thermal expansion (at 20 °C)
Maximum length
FASTRACK
Form
Mounting
Material
Coefficient of thermal expansion (at 20 °C)
Minimum recommended length
Customer
electronics
Extension
5 V
cable*
0 V
0.2 mm x 8 mm (H x W)
Loctite 435
Hardened and tempered martensitic stainless steel
±10 µm/m, calibration traceable to International Standards
10.1 ±0.2 µm/m/°C
10.02 m
0.4 mm x 18 mm (H x W) (includes adhesive)
Self-adhesive backing tape
Hardened and tempered martensitic stainless steel
10.1 ±0.2 µm/m/°C
100 mm
Serial
communication
signals
8