Fcn; Direction Anding; Direction Hysteresis - Electro Cam PLUS PS-5000 Series Programming & Installation Manual

FCN 1

Ao, Ah - Analog Output Signal
(Units with "A" option only)
The analog option allows PLµS controls to output an analog
signal that is linearly proportional to the current machine
RPM. Analog output modules are available with either 0-10
VDC or 4-20 mA output. The two parameters that define the
operation of the Analog output are the Offset and the High
RPM (speed at which full scale signal occurs).
Ao - Analog offset: The Analog offset is the analog signal
level that will be output when the machine º0is at zero RPM.
This allows the minimum analog signal to be greater than
zero volts or 4 mA, which is required in many applications.
The offset is programmed in terms of the number of 12 bit
(4096) increments that the minimum signal level should be.
Calculate the Offset value to be programmed as follows:
For 20 mA: ((Min Sig - 4) / (16))
EX: 5 mA Min Sig Ao = ((5-4)/(16))
For 10 VDC: (Min Sig /10) x 4096
EX: 2 VDC Min Sig Ao = (2 / 10) x 4096 = 819
Ah - Analog high RPM: The Analog high RPM is the
lowest speed at which full scale analog output will occur. It
is programmed in whole RPM.
EX: Need 5 mA output at zero RPM and 20 mA output at
1200 RPM. Ao = 256 (mA example above) and Ah = 1200
RPM.
Outputs Based On Direction of Rotation: Option "-D"
In standard PLµS controllers without the "-D" option, outputs
will turn ON/OFF based on resolver position, regardless of
which direction the resolver is turning. With the "-D" option,
outputs can be based on the direction the resolver is
rotating. Outputs can be set individually to be based on
direction.
Direction ANDing: To choose which channels are to be
based on direction, select Alternate Function 5. This is
accomplished by pressing the FCN key and POS/RPM
key simultaneously, then pressing 5, then pressing EN-
TER. The number 1 will appear above the channel key
(CHN). OFF will appear in the display on the right, next to
the POS/RPM key.
Toggle through each channel by pressing the CHN key.
Toggle the feature between OFF, increment direction
ANDing (INC), and ON decrement (DEC) direction ANDing
by pressing the PULSE key. The factory default will be
OFF for all channels.
Direction Hysteresis: Direction hysteresis is used to specify how far in one direction the resolver must rotate before a
change in direction ANDing occurs and affects the output ON/OFF status. This level is adjustable so that vibration in the
machine will not cause outputs to switch. Select Alternate Function 6 to enter the hysteresis value (1 to 9999 scale factor
units). Note that the resolver must move twice the hysteresis value in the opposite direction before the change in
direction ANDing occurs. The default is 2.
Analog Output: Option "-A"
x 4096
x 4096 = 256
5-2 Programming, Optional Features
Programming the Analog Offset
1st If FCN 1
Ao - Analog
not shown press:
offset
FCN 1 ENT
2nd
Press CHN key 3rd
until Ao is shown
Programming the Analog Full Scale Signal RPM
1st If FCN 1
Ah - Analog
not shown press:
high (RPM)
FCN 1 ENT
2nd
Press CHN key 3rd
until Ah is shown
Channel
Present Analog offset
in 1/4096ths of full
scale signal
Press number keys followed by
ENT key to change Analog
offset value
Present RPM for full
scale analog signal
output
Press number keys followed by
ENT key to change Analog
high RPM value
Use CHN key to toggle
between OFF, INC, DEC
Hysteresis value