MICRO-EPSILON confocal DT2471, Руководство по эксплуатации

Страница: 21 / 166

Page 21
Assembly
confocalDT 24x1
4.5.7 Synchronization (Inputs/Outputs)
For the pin assignment of the 12-pin pluggable screw terminal, see Fig. 11
Pin SyncIn/TrigIn: sync or trigger input
Pin GND: ground
Pin Shield: cable shield; shield is connected to the cover
Pin SyncOut: sync output
Pin GND: sync ground
All GND pins are interconnected, and they are connected to the operating voltage
ground.
Signal level
SyncOut output level (push-pull,
no load resistance), with a supply
voltage of 24VDC
LLL: Low 0.2 … 0.8 V; High 4.5 … 5 V
HLL: Low 0.2 … 0.8 V; High 23.5 … 24 V
Output resistance Ri approx. 90 ohm,
Load resistance, saturation voltage
LLL operation: RL ≥ 100 ohm; U
sat-lo/hi ave. 1.5 V
HLL operation: RL ≥ 2 kOhm; U
sat-lo/hi ave. 1.2 V
SyncIn / TrigIn
LLL operation
1
Low 0 V … 0.8 V, High 2 V … 5 V no bridge between the pins (HLL)
HLL operation Low 0 V … 4 V, High 11 V … 30 V bridge between the pins (HLL)
Pulse duration ≥ 5 µs
Star synchronization :
Connect the SyncOut output of controller 1 (master) in star configuration with the
SyncIn inputs from controller 2 (slave) to Controller n, in order to synchronize two or
more controllers, see Fig. 12 .
Cascaded synchronization:
Connect the SyncOut output of controller 1 (master) with the SyncIn inputs of con-
troller 2 (slave 1). Connect the SyncIn inputs of downstream controllers in order to
synchronize two or more controllers, see Fig. 12 .
Use a shielded cable. Partial cable length less than 30 m with star synchronization,
total cable length less than 30 m with cascaded synchronization. Connect the cable
shield to 'Shield'.
confocal DT
Intensity >max
Intensity <max
Intensity ok
STATUS
Out of range
Midrange
In range
Analog Out Encoder RS422
U out GND U Shiel
d
I out GND I Sy
nchIn /
TrigIn
GND Shiel
d
Sy
nchOut
GND Er
ro
r 1
GND Shiel
d
Er
ro
r 2
GND HLL 24 VDC GND Shield
Digital I/O Power
Dark reference
Ethernet
EtherCAT
Sensor
External
light source
Power On
External light
source
Status In
Master
Slave 1 Slave n
confocal DT
Intensity >max
Intensity <max
Intensity ok
STATUS
Out of range
Midrange
In range
Analog Out Encoder RS422
U o
ut
GND U Shield I out GND I SynchIn /
TrigIn
GND Shield SynchOut GND Er
ro
r 1
GND Shield Er
ro
r 2
GND HLL
24 VDC GND Shiel
d
Digital I/O Power
Dark reference
Ethernet
EtherCAT
Sensor
External
light source
Power On
External light
source
Status In
confocal DT
Intensity >max
Intensity <max
Intensity ok
STATUS
Out of range
Midrange
In range
Analog Out Encoder RS422
U o
ut
GND U Shield I out GND I SynchIn /
TrigIn
GND Shield SynchOut GND Er
ro
r 1
GND Shield Er
ro
r 2
GND HLL
24 VDC GND Shiel
d
Digital I/O Power
Dark reference
Ethernet
EtherCAT
Sensor
External
light source
Power On
External light
source
Status In
Length max. 30 met
er
confocal DT
Intensity >max
Intensity <max
Intensity ok
STATUS
Out of range
Midrange
In range
Analog Out Encoder RS422
U out GND U Shield I out GND I SynchIn /
TrigIn
GND Shield SynchOut GND Er
ror 1
GND Shield Er
ror 2
GND HLL 24 VDC GND Shield
Digital I/O Power
Dark reference
Ethernet
EtherCAT
Sensor
External
light source
Power On
External light
source
Status In
Master
Slave n
confocal DT
Intensity >max
Intensity <max
Intensity ok
STATUS
Out of range
Midrange
In range
Analog Out Encoder RS422
U o
ut
GN
D U
Sh
iel
d
I out GN
D I
SynchIn
/
TrigI
n
GN
D
Sh
iel
d
SynchOu
t
GN
D
Er
ro
r 1
GN
D
Sh
iel
d
Er
ro
r 2
GN
D
HLL
24 VD
C
GND Shiel
d
Digital I/O Power
Dark reference
Ethernet
EtherCAT
Sensor
External
light source
Power On
External light
source
Status In
Slave 1
confocal DT
Intensity >max
Intensity <max
Intensity ok
STATUS
Out of range
Midrange
In range
Analog Out Encoder RS422
U o
ut
GND U Shiel
d
I o
ut
GND I SynchIn /
TrigIn
GND Shiel
d
SynchOut GND Er
ro
r 1
GND Shiel
d
Er
ro
r 2
GND HLL 24 VDC GND Shiel
d
Digital I/O Power
Dark reference
Ethernet
EtherCAT
Sensor
External
light source
Power On
External light
source
Status In
SynchIn /
Tri
GND Shield SynchOut GND Er
Sum of partial cables

30 meter
Fig. 12 Synchronization of more controllers, star synchronization (left), cascaded (right)
The number of connectable slaves is limited by the maximum permissible load ca-
pacitance CL at the sync output of the master. CL consists of the cable capacity (typ.
0.1 nF / m with twisted wires) and the input capacity of the slaves (Cin typ.1 nF).
CLmax at 100 Hz…10 kHz 80 nF CLmax at 50 kHz 15 nF
CLmax at 25 kHz 30 nF CLmax at 70 kHz 10 nF
1) Use the LLL operation if possible to reduce the power dissipation of the driver IC.