AMETEK 952 BlueOx LDT - Manual (Page 9)

9 1080 N. Crooks Road • Clawson, MI 48017 • 800.635.0289 • 248.435.0700 • Fax 248.435.8120 • www.AMETEKAPT.com
WARNING: Do not use the blue aluminum cover
of the head assembly or connector/cable nut
(either a 1 1/16" Amphenol connector or 1 3/16"
cable nut) to tighten the LDT within the bracket
(see Figure 2-1). This may damage the LDT
and will void your warranty. To tighten the LDT
within the bracket, use the 1.75" hex mounting
base on the head assembly.
At this point, the LDT should now be properly
installed inside the hydraulic cylinder. It may now
be necessary to assemble parts of the hydraulic
cylinder. For assistance in this task, refer to the
information provided by the cylinder manufacturer.
Unipolar Wiring
In order for the BlueOx to operate properly, the
LDT’s external power supply must provide a voltage
between +13.5 to +30 VDC for analog and +15 to
+26 VDC for digital style LDTs. The power supply
must be rated at 250mA minimum. The power
supply should provide less than 1% ripple with 10%
regulation.
The power supply should be dedicated to the
LDT to prevent noise and external loads from
affecting the BlueOx. When powering up more
than one BlueOx on a single power supply, each
BlueOx will draw no more than 250mA.
3.1: 952 Analog - V0/V1 (Voltage)
The 952A-V LDT generates a voltage output based
on position. The 952A BlueOx with analog output
offers 16 bits of resolution and is fully programmable
over the entire active stroke length of the LDT. Keep
in mind that there is a 2” Null area at the connector
end of the LDT and a 2.5” Dead area at the other
end of the LDT that the magnet must stay out of at
all times. The units come fully programmed from the
factory and do not require re-programming unless
desired. The analog units are 100% absolute and
will not lose programmed parameters on power loss.
The analog output is referenced to the analog
common terminal and should not be referenced to
any of the other common terminals. To wire the 952A
voltage LDT, see Section 3.4 and Figure 3-2. For
programming Zero and Span, refer to Section 3.9.
3.2: 952 Analog - C4/C2 (Current)
The 952A-C LDT generates a current output based
on position. The 952A BlueOx with analog output
offers 16 bits of resolution and is fully programmable
over the entire active stroke length of the LDT. Keep
in mind that there is a 2” Null area at the connector
end of the LDT and a 2.5” Dead area at the other
end of the LDT that the magnet must stay out of at
all times. The units come fully programmed from the
factory and do not require re-programming on power
loss. The analog output is referenced to the analog
common terminal and should not be referenced to
any of the other common terminals. To wire the 952A
current LDT, see Section 3.4 and Figure 3-2. For
programming Zero and Span, refer to Section 3.9.
NOTE: 952A-C is current sourcing, which allows
the current to flow from the LDT into the user’s
equipment.
3.3: 952 Analog - D0/D1
(Differential Analog Output)
The 952A analog LDT’s are available with an
optional differential analog output. This feature is
hardware specific and must be specified at time of
order. The differential feature allows the distance
between two magnets to be measured. The magnets
must remain within the active stroke range at all
times and cannot be any closer than 2.5” to each
other. Keep in mind that there is a 2” Null area at the
connector end of the LDT and a 2.5” Dead area at
the other end of the LDT that the magnets must stay
out of at all times. The units come fully programmed
from the factory and do not require re-programming
unless desired. The analog units are 100% absolute
and will not lose programmed parameters on power
loss. For programming Zero and Span, refer to
Section 3.9.