Provib Tech VS102 User Manual - page 15
VS102 Electronic Vibration Switch
ProvibTech
14
Trouble shooting
1. The instrument is NOT OK after powered on
Inspect whether its power supply is correct referring to the field wiring diagram; inspect whether
the delay period expired.
2. The instrument has no 4-20mA output
Inspect whether its power supply is correct referring to the field wiring diagram; inspect whether
the cables and 4-20mA terminals are connected correctly. If the power supply is okay, LED
indicates okay, the instrument should outputs a current of within 4-20mA.
3. Hardware zero point and alarm can not be adjust
Inspect whether its power supply is correct referring to the field wiring diagram; inspect whether
the cables and 4-20mA terminals are connected correctly. According to the relevant part of the
user manual, adjust it while the corresponding LED flash. Note, when ALERT LED and
DANGER LED flash, It is needed to wait three seconds before pressing + and/or – to adjust the
set point.
4. Instrument outputs with great error
Ensure that the instrument is installed correctly and reliably. Its terminals are connected
correctly and reliably.
5. Alarm status is abnormal
Inspect whether the instrument is powered correctly referring to the field wiring diagram; the
cables and the terminals are connected tightly. Make sure that the connected instrument’s rated
power suffices the relays and triacs’ requirement (RELAY: 5A 230VAC/115VAC TRIAC: 5A
230VAC). According to the Alarm option in the category, connect terminals correctly, referring to
the field wiring diagram. If the instrument behaves normally, when the alarm set point has been
broken and retained for a time of alarm delay, corresponding LED lights up and relay and triac
activates.
6. Measurement value increases abruptly or causes false alarm when using high frequency
devices(e.g. interphone)
It is caused by the installation method of vibration switch. The ideal method that all the wires of
connecting vibration switch go through the metal conduit. Provibtech recommends to use this
method; if there is no this installation condition in the field, it needs to use magnetic ring as the
appendix shows. If it doesn’t work well, please increase the quantity of magnetic ring according to
the field condition. The installation method is as follows: