TONiC RKLC20-S linear installation guide
13
Ti / TD interface
Customer
electronics
Inner shield
Outer shield
Output
signals
0 V
5 V
Readhead
Electrical connections
IMPORTANT: The outer shield should be connected to the machine earth (Field Ground). The inner shield
should be connected to 0 V at receiving electronics only. Care should be taken to ensure that the inner and
outer shields are insulated from each other. If the inner and outer shields are connected together, this will
cause a short between 0 V and earth, which could cause electrical noise issues.
NOTE: Maximum cable length between readhead and Ti / TD interface is 10 m
Single ended alarm signal termination (Ti options A, B, C, D)
Customer
electronics
Interface
5 V
4k7
4k7
1k8
100R
100nF
E−
Extension cable
maximum 50 m
dependent upon
clocked output
option
Remote CAL operation
(Analogue versions only)
CAL
0 V
All Ti / TD interfaces include a push button switch to enable CAL /AGC
features. However, remote operation of the CAL /AGC is possible via
pin 14 of analogue Ti0000 interfaces. For applications where no
interface is used, remote operation of CAL /AGC is essential.
TD interface resolution switching
Pin 10
0 V
Connect pin 10 to 0 V to switch to lower resolution.
Analogue outputs
V
0
V
1
V
2
−
V
0
V
1
V
2
+
120R
V
p
V
q
P Q
R*
5 to 24 V
*Select R so maximum current does not exceed 20 mA.
Alternatively use a suitable relay or opto-isolator.
Limit output
(No limits on TD interfaces)
Recommended signal termination
Standard RS422A line receiver circuitry
Capacitors recommended for improved noise immunity
120R
A B Z E
−
Customer
electronics
Cable Z
0
= 120R
A B Z E+
220 pF
220 pF
0 V
0 V
Grounding and shielding
Digital outputs