Electrical Connections - Renishaw QUANTiC RTLC40-S Installation Manual

Electrical connections

Grounding and shielding
Readhead
QUANTiC readhead
termination/connector
Shield
IMPORTANT: The shield should be connected to the machine earth (Field Ground).
For JST variants the ferrule should be connected to the machine earth.
Recommended signal termination
Digital outputs
Readhead
A B Z+
Cable Z = 120R
0
A B Z−
Standard RS422A line receiver circuitry.
Capacitors recommended for improved noise immunity.
Single ended alarm signal termination
(Not available with 'A' cable termination)
Readhead
100R
E−
4k7
QUANTiC RTLC40-S installation guide
Customer
electronics
5 V
0 V
0 V
Customer
220 pF
electronics
120R
220 pF
0 V
5 V
Customer
4k7
electronics
1k8
100nF
Maximum cable length
Readhead cable
Output signals
Maximum extension
cable length
Readhead to ADTi-100
Recommended signal termination
Analogue outputs
V V
0
V V
0
NOTE: 120R termination on the analogue output signals is essential for correct AGC operation.
Analogue and digital ouputs
Limit output
(Not available with 'A' cable termination)
5 V to 24 V
V V
p q
*
Select R so that maximum current does not exceed 20 mA.
Alternatively, use a suitable relay or opto-isolator.
Remote CAL operation
Remote operation of the CAL /AGC is possible via CAL signal.
Analogue
5 m
Dependent on cable type, readhead cable length and
clocked output option. Contact your local Renishaw
representative for more information.
5 m
(continued)
V +
1 2
120R
V −
1 2
R *
P Q
CAL
0 V
Digital
3 m
3 m
18