Switching Characteristic Graphs
Signal “on” with rising pressure Setting SP* > RP**
Signal “on” with falling pressure Setting SP < RP
Signal “off” with rising pressure Setting RP > SP
Signal “off” with falling pressure Setting RP < SP
pp
SP
RP
RP
SP
t
UA
U
t
p
RP
SP
t
U
t
p
SP
RP
t
UA
t
t
* SP = Switching point
t
**RP = Reset point
Explanation:
When the switching point (SP) is adjusted HIGHER than the reset point (RP), then the switching output will be “normally off”. When the switching point (SP) is adjusted LOWER than the reset point (RP), then the switching output will be “normally on”.
Position of operating elements
E R R O R M E S S A G E S
Pressure display |
Switching |
function graph |
Switching output LED |
Switching point button |
Raise switching |
or reset point button |
Reset point button |
Lower switching |
or reset point button |
Display of hardware errors or malfunctions
Display | Meaning | Cause / Remedy |
|
|
|
O.Er | Output error | Error at switching output: |
|
| to processor open circuit. Repair necessary. |
|
|
|
E.Er | E2PROM error | E2PROM module defective or connection to processor faulty. |
|
| Repair necessary. |
|
|
|
I.Er | Initialization error | Checksum of initialization data incorrect. Remedy: Call up any |
|
| SETUP function and acknowledge the setting with SP. |
|
| This error message is caused by a data error. All setup values |
|
| should therefore be checked and corrected if necessary. |
C.Er | Calibration error | Checksum of calibration data incorrect. Recalibration necessary. |
|
|
|
SC.L | ||
|
| Power supply may be too weak for connected load (leading |
|
| to collapse of voltage, particularly with loads with a high |
|
| current such as incandescent lamps or capacitances). |
UFL | Underflow | The applied pressure is below the measuring range: |
|
| Increase pressure until it is within the measuring range. |
OFL | Overflow | The applied pressure is above the measuring range: |
|
| Decrease pressure until it is within the measuring range. |
|
|
|
Display of hardware errors or malfunctions (can be switched off)
Display | Meaning |
| Cause / Remedy | |
|
|
|
| |
SC.H |
| |||
|
|
| If the switching line from the load (e.g. electrical control | |
|
|
| device, PLC or similar) is being held at an | |
|
|
| potential of > 3V, or if several pressure switches are being | |
|
|
| operated in parallel, this function should be switched off. | |
|
|
| Disconnection: ▼ during display test, then adjust with ▼ or ▲. | |
U.Lo | Voltage low |
| Power supply voltage too low (<17V). | |
|
|
| Check power supply: Load may be too large. | |
|
|
| Disconnection: ▲ during display test, then adjust with ▼ or ▲. | |
|
|
|
| |
Messages generated by calling SETUP functions | ||||
|
|
|
|
|
Cod | Meaning |
| Requested code or code programming | |
|
|
|
| |
CLC | Clear code |
| Deletion of current code | |
|
|
|
| |
txx | Delay time |
| Setting of filter time constant | |
| (Buffering time) |
| xx = Switching output delay | |
|
|
|
| xx {03, 06, 12, 24, 50} in ms and |
|
|
|
| xx {O.1, 0.2, O.4} in s. |
OFS | Offset |
| Request for offset adjustment using ▼ and ▲ buttons | |
SC.H |
| |||
U. LO | Voltage low |
| Voltage monitoring activated | |
OFF | Off |
| ||
|
|
|
| |
Std | Standard mode |
| Standard mode activated | |
HYS | Hysteresis mode |
| Hysteresis mode activated | |
FEn | Window mode |
| Window mode activated | |
|
|
| ||
Voltage calibration | Voltage output selected | |||
Current calibration | Current output selected | |||
|
|
|
|
|