Configurable Inputs / Outputs - KPM PROCESS SENSORS METIS M311 Operating Manual

4.1.4 Configurable Inputs / Outputs

3 ports are each available as:
▪ Digital output provides a switching signal:
- Device ready to operate (device ready and error-free after self-test)
- Material detection (only M3): turns on when exceeding the beginning
of temperature range
- Limit switch when a certain temperature threshold is exceeded or fall-
ing below
- Exceeding the maximum allowed internal device temperature
- Signal strength too low (for use as pollution monitoring: allows to de-
tect the degree of contamination of the pyrometer's optics or of a view-
ing window or to identify interferences (dust ...) in the IR sensor's sight path and trigger an alarm if neces-
sary).
- When equipped with PID controller: controller activity, control within definable setpoint limits, con-
trol completed successfully, hold time finished.
INFO
The maximum output current is limited to 50 mA.
INFO
The logic of the signal can be inverted (see
▪ Digital input for activating functions via voltage pulse (ex-
ternal button) or continuous voltage (switch).
- Clearing the peak picker by voltage pulse.
- Start controller by voltage pulse (only devices with PID
controller).
- Activate controller as long as voltage is present at the
connection (only devices with PID controller).
- Load pyrometer configuration (Setups) by voltage
pulse (digital input "parameter selector").
- Switch on / off laser targeting light (when equipped
with a laser targeting light)
(the targeting light will automatically switch off after 3 minutes if it is not switched off manually. The switch-
off time is adjustable via software under
CAUTION
SAFETY INSTRUCTIONS
▪ Never look into the direct or reflected laser beam.
▪ Do not point the laser to anyone.
▪ If laser radiation hits the eye, avert one's eyes immediately.
INFO
A debounce time
so that it can be recognized and processed by the system (3 ms are specified by the pyrometer hard-
ware). Values between immediately (0) to 1 s can be set.
▪ Analog input (only M3 and on port 3) for external adjustment of some
parameters between their smallest and largest setting value.
- Emissivity slope (0 mA = 0.8; 20 mA = 1.2)
- Emissivity for every channel (0 mA = 0.05; 20 mA = 1.2)
- Setpoint at devices with PID controller (0 mA = zero scale tempera-
ture, 20 mA = full scale temp.)
- Focus distance at M3 devices with motorized focus (0 mA = shortest distance, 20 mA = widest distance)
INFO
The analog input requires a current source of 0-20 mA and can be generated, for example, via a
setpoint generator.
12 / 81
7.1.5
Laser radiation, laser class 2, do not look into the beam.
can be selected, that is, a period the signal at least must be present at an input
METIS M311 / M322 / H311 / H322 (12-pin device connector)
Device configuration →
7.1.5
+24 V
0 V
Note: The input is safely detected as "high" at a voltage
> 15.5 V and safely detected as "low" at a voltage < 3.0 V.
Device configuration → Laser targeting light settings).
+24 V
White
Max. 50 mA
Grey
Pink
Blue
0 V
Brown
0 V
Logic NO / NC)
+24 V
White
Grey
Input 1-3
Pink
Blue
0 V
Brown
Setpoint input
via external
0...20 mA
Blue
Current source
0 V
Brown
M3 / H3
Output
100 kΩ
M3 / H3
>10 kOhm
M3
≤300 Ω