Page 20
Assembly
confocalDT 24x1
4.5.5
Analog Output
The two alternative analog outputs (voltage or current) are connected to the 5-pin screw
terminal, and both are electrically isolated from the supply voltage.
Voltage
: Pin Uout and Pin GND U,
Ri approx. 30 ohm, RL > 1 kOhm, CL
≤ 10 nF;
Slew rate (no CL, RL
≥ 1 kOhm) ave. 0.5 V/µs
Slew rate (with CL = 10 nF, RL
≥ 1 kOhm) ave. 0.4 V/
µs
Current
: Pin Iout and Pin GND I
RL
≤ 500 ohm, C
L
≤ 10 nF;
Slew rate (no CL, RL )= 500 ohm) ave. 1.6 mA/µs
Slew rate (with CL = 10 nF, RL = 500 ohm) ave. 0.6 mA/µs
Use a shielded cable of less than 30 m.
Pin 3 (Shield) is connected to the cover.
Alternatively, the following values may be defined for the out-
put range:
Voltage: 0 ... 5 V; 0 ... 10 V; -5 ... +5 V; -10 ... +10 V
Current: 4 ... 20 mA.
Only one reading can be produced as voltage or current.
Fig. 10 Analog out-
puts on the control-
ler
4.5.6
Switching Outputs (Digital I/O)
The two push-pull switching outputs on the 12-pin pluggable screw terminal are not elec-
trically isolated from the supply voltage.
A bridge between the pins (HLL) defines the logic levels for all I/O and Sync/Trig on the
screw terminal:
-
with bridge: HLL (high logic level)
-
open: LLL (low logic level).
Error out 1: error 1 and GND
Error out 2: error 2 and GND
Cable shield: Shield is connected to the cover.
Connect the cable shield.
All GND pins are interconnected, and they are
connected to the operating voltage ground.
Use a shielded cable of less than 30 m.
Fig. 11 Digital I/O on the controller
Output level (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
Usat-lo/hi saturation voltage (with resistance load RL) is measured between output and
GND, when output = low, or between output and UB, when output = high.
