TONiC RKLC20-S linear installation guide
15
General specifications
Power supply
5 V ±10% Readhead only <100 mA
T103x with Ti0000 <100 mA
T103x with Ti0004 – Ti20KD or TD4000 – TD0040 <200 mA
NOTE: C
urrent consumption figures refer to unterminated
systems.
For digital outputs a further 25 mA per channel pair
(eg A+, A
−
) will be drawn when terminated with 120R
.
For analogue outputs a further 20 mA in total will be
drawn when terminated with 120R
.
Power from a 5 V dc supply complying with the
requirements for SELV of standard IEC BS EN 60950-1.
Ripple 200 mVpp
maximum
@ frequency up to 500 kHz
Temperature
(system)
Storage
−20 °C to +70 °C
Operating
0 °C to +70 °C
(UHV readhead)
Bakeout
+120 °C
Humidity
(system)
95% relative humidity (non-condensing) to EN 60068-2-78
Sealing
(readhead)
IP40
(interface)
IP20
Acceleration
(readhead)
Operating 500 m/s
2
, 3 axes
Shock
(system)
Operating 500 m/s
2
, 11 ms, ½ sine, 3 axes
Vibration
(readhead)
Operating 100 m/s
2
, 55 Hz to 2000 Hz, 3 axes
(scale)
Operating 300 m/s
2
, 55 Hz to 2000 Hz, 3 axes
Mass
Readhead 10 g
Interface 100 g
Cable 26 g/m
UHV cable 14 g/m
Readhead cable
(standard)
Double shielded, outside diameter 4.25 ±0.25 mm
Flex life >20
×
10
6
cycles at 20 mm bend radius
UL recognised component
(UHV)
Tin coated braided single screen FEP core insulation
Maximum cable length
Readhead to interface
Interface to controller
10 m
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.
RKLC20-S scale specifications
Form
(H × W)
0.15 mm × 6 mm including adhesive
Pitch
20 µm
Accuracy
(at 20 °C)
±5 µm/m
Linearity
±2.5 µm/m achievable with two point error correction
Supplied length
20 mm up to 20 m (>20 m on request)
Material
Hardened and tempered stainless steel
Mass
4.6 g/m
Coefficient of thermal expansion
(at 20 °C)
Matches that of substrate material when scale ends fixed
by epoxy mounted end clamps
Instalation temperature
+10 °C to + 35 °C
End fixing
Epoxy mounted end clamps (A-9523-4015)
Approved epoxy adhesive (A-9531-0342)
Scale end movement typically <1 µm up to +40 °C
Reference mark
Type
Customer selected
IN-TRAC
reference mark, directly
embedded into incremental track. Bi-directional position
repeatability
Selection
Single reference mark selection by selector magnet
(A-9653-0143) customer positioned.
L ≤100 mm
Single reference mark at scale centre
L >100 mm
Reference marks at 50 mm spacing (first reference mark
50 mm from scale end)
Repeatability
Unit of resolution repeatability (bi-directional) across full
system rated speed and temperature ranges
Limit switches
Type
Magnetic actuators; with dimple triggers Q limit, without dimple triggers P limit
(see ‘RKLC20-S scale installation drawing’)
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
Repeatability
< 0.1 mm
Clocked output option (MHz)
Maximum cable length (m)
40 to 50
25
<40
50
analogue
50