Bosch Rexroth PL6-PQI Manuel D'utilisation

Industrial Hydraulics FAQs
FAQ Title: P/Q Amplifier Replacement
Category: Electronics
Sub-Category: Control Systems
Question:
What changes or switch settings are necessary when updating to the newer
P/Q control amplifiers?
Answer:
Former PQ amplifiers only supported 0 to +10V or 1 to +6V pressure
-
transducers. Newer PQI amplifiers have these options, but also a
third option for a 4 to 20mA pressure transducer. With this expansion
of options, there are changes to the wiring and a switch setting which
must be addressed.
Regarding original PQ amplifiers, the electrical connections for a
-
pressure transducer were pin b16 for a 0 to +10V transducer, and pin
z14 for the 1 to +6V transducer, with pin b18 being the 0V connection
for either version. The PQI amplifier assigns these connections to: pin
b16 for the 0 to +10V or 1 to +6V transducers, and pin b18 as the 0V
connection. However, with respect to pin z14, a 4 to 20mA
transducer would be connected to pins z14 and b18!
The switch setting affected is switch 1, which must be set to "ON" if a
-
voltage driven pressure transducer is applied. Also remember that
switch identification begins with "0"; therefore, switch "1" is actually
the second one from the right. Please review the attached data
sheets for additional detail and diagrams.
Attachments:
RE30058, RE30082, RE30134, UBY13/3, UBY13/84, UBY13/89, UBY13/124,
UBY13/125, UBY13/126
Updated: JS_September2013
Bosch Rexroth Corporation
Hydraulics
2315 City Line Road
Bethlehem, PA 18017
Tel (847) 645-3600