Electro Cam PS-2252-12-PT1 NFEI - Manual

PS-2252-12-TP1
Net Forward Encoder Interface
The PS-2252-12-TP1 Net Forward Encoder Interface (NFEI) accepts inputs from the A and B channels of a standard
quadrature encoder. The NFEI outputs a pulse for each forward direction transition of the encoder, but reverse direction
transitions result in no pulses. Furthermore, following reverse movement, no output pulses result from forward move-
ment until the encoder position exceeds the furthermost forward position reached before the reverse movement. The
NFEI rejects jitter resulting from mechanical oscillation at a transition point of the encoder with the system at a zero
average velocity. Note: If more than 65,535 consecutive reverse encoder transitions are made, an Overflow output on
the NFEI is activated indicating that the reverse counter has lost track of reverse transitions.
A reset input allows clearing
the reverse counter in order to restart.
13647 Metric Rd • Roscoe, IL 61073 USA • 815/389-2620 • FAX 815/389-3304 • 800-228-5487 (U.S.A. and Canada)
Inputs
Channel A, Channel B: Standard Quadrature encoder A and B channels.
Reset: Resets internal reverse counter when high-level.
Outputs
Out 0: High-going pulse indicates forward increment of encoder.
Overflow: High level indicates overflow of internal 16-bit reverse counter.
Voltage Levels
Channel A & B Inputs: 5-15 VDC.
Reset Input On voltage: Optically isolated, 4.0 VDC min @ 10 mA.
Out 0 & Overflow Outputs: 7406 open collector.
VOL = 0.4V max @ IOL = 16 mA. VOH = 30V max.
Timing
Time Between Encoder Channel Edges: 17 microseconds minimum.
Reset Input Pulse Width: 50 microseconds minimum.
Output Pulse Width: 20 microseconds minimum.
Configuration
CW/CCW: Dip switch sets forward rotation direction.
1st switch ON = CW. 1st switch OFF = CCW. Switches 2-6 are not used.
Power Supply
Supply Voltage: 11-15 VDC.
Supply Current: 90 mA @ 12 VDC.
Environment
Operating Temperature: 0
° to 55 ° C (32 ° to 131 ° F)
Storage Temperature: -40 ° to 70 ° C (-40 ° to 160 ° F)
Humidity: 95% maximum relative non-condensing.
Mounting
Brackets accept EN-50035 (''G'' profile) or EN-50022 (''Top Hat'' profile) DIN rail.
EN-50035 (''G'' profile) included.