19
QUANTiC RTLC40 /
FASTRACK
installation guide
Electrical connections
Shield
Output signals
5 V
Readhead
termination/connector
0 V
Customer
electronics
QUANTiC readhead
Recommended signal termination
Digital outputs
Standard RS422A line receiver circuitry.
Capacitors recommended for improved noise immunity.
Customer
electronics
120R
A B Z−
Cable Z
0
= 120R
Readhead
A B Z+
0 V
0 V
220 pF
220 pF
Single ended alarm signal termination
(Not available with ‘A’ cable termination)
Customer
electronics
5 V
1k8
4k7
4k7
100nF
100R
E−
Readhead
Analogue and digital ouputs
Limit output
(Not available with ‘A’ cable termination)
5 V to 24 V
R*
V
p
V
q
P Q
*
Select R so that maximum current does not exceed 20 mA.
Alternatively, use a suitable relay or opto-isolator.
Remote CAL operation
CAL
0 V
IMPORTANT:
The shield should be connected to the machine earth (Field Ground).
For JST variants the ferrule should be connected to the machine earth.
Remote operation of the CAL /AGC is possible via CAL signal.
Grounding and shielding
Maximum cable length
Analogue
Digital
Readhead cable
5 m
3 m
Maximum extension
cable length
Dependent on cable type, readhead cable length and
clocked output option. Contact your local Renishaw
representative for more information.
Readhead to ADTi-100
5 m
3 m
V
0
V
1
V
2
−
V
0
V
1
V
2
+
120R
NOTE:
120R termination on the analogue output signals is essential for correct AGC operation.
Recommended signal termination
(continued)
Analogue outputs