Honeywell 120/240VAC, 60W 900P01-0201
4 Channel Pulse/Frequency/Quadrature Module - DC Voltage type (900K01-xxxx)
The 4 Channel Pulse/Frequency/Quadrature Module
provides four different functionalities in the form of Pulse
Input, Frequency measurement, Quadrature encoder input
and Pulse Output. Each of these channels can be
configured for any one of these four functions; with the
exception that quadrature encoder input
(A and B pulses) can be applied to only Channels 1 and 2
respectively. When configured for quadrature, the other two
channels will still be available for use. The Pulse Output
functionality uses the digital output available on the module
for outputting pulses.
A green blinking status LED on the module indicates when
the module is being scanned. An amber blinking status
LED indicates when channels are forced and a red status
LED when module diagnostics exist.
Input Voltage
Range
0 VDC to 24 VDC
Inputs per module 4
Outputs per module 4
Digital Output type Open collector, 5 to 24V, 30mA max,
used for fast signaling
Power Supply
Loading
5V; 110mA max
24V; 250mA max (with Encoder)
24V; 100mA max (without Encoder)
Pulse Input Specifications
Input Voltage Range 0 VDC to 24 VDC
ON Voltage Level 3.0 VDC minimum
OFF Voltage Level 1.0 VDC maximum
Input Impedance 25K ohm
Frequency 10 KHz maximum
Minimum Pulse Width 3 µsec
Pulse Counter 32 bits
Preset Value User may configure a preset count value within the range of 32 bit counter
Preset Action Settable as ON or OFF in HC Designer
Digital Output If preset action ON, output turns ON for 1 second.
If preset action OFF, output latches ON, and remains ON until counter reset command.
Counting based
on Preset
When the count equals preset value:
If preset action ON, counter is reset and immediately resumes count.
If preset action OFF, counter is not reset and counts beyond preset value.
Counter HOLD When the HOLD input to the pulse input function block is ON in HC Designer, the counter
holds its current value.
Counter RESET The counter may be reset only via its function block in HC Designer, when an OFF to ON
transition occurs on the ^RST input in Monitor mode.
Counter Flags The OVERFLOW flag gets set when the module counter overflows. This flag can be reset only
with the ^CLFG command sent through HC Designer. Also, the PREI flag is set when the
digital output of the module turns ON.

4 Channel Pulse/Frequency/Quadrature Module - DC Voltage type (900K01-xxxx) (cont’d)
Frequency Input Specifications
Input Voltage Range 0 VDC to 24 VDC
ON Voltage Level 3.0 VDC minimum
OFF Voltage Level 1.0 VDC maximum
Input Impedance 25K ohm
Frequency 10 Hz minimum
100 KHz maximum
Minimum Pulse width (frequency
ranges)
Settable only through HC Designer:
500 µsec (10 Hz to 500 Hz)
50 µsec (10 Hz to 5 KHz)
2.5 µsec (10 Hz to 100 KHz)
Digital Output ON if input frequency out of range, else OFF
Quadrature Input Specifications
Channels Used Only channels 1 and 2 can be used for quadrature pulses A and
B respectively.
Index pulse is provided in addition.
Input Voltage Range Differential: -6 VDC to +6 VDC
Single-ended: 0 VDC to 24 VDC
ON Voltage Level Differential: 0.2 VDC minimum
Single-ended: 3.0 VDC minimum
OFF Voltage Level Differential: -0.2 VDC maximum
Single-ended: 1 VDC maximum
Common Mode Voltage +/- 12VDC
Input Sensitivity +/- 200mV
Hysteresis +/- 50mV
Module powered encoder 5V DC, 0.50A
Frequency 200 KHz maximum
Minimum Pulse Width 2.25 µsec
Quadrature Counter 32 bits signed
Quadrature Modes For variable resolution there are three count modes for the
Pulse/Quadrature input:
X1: rising edges of signal A are counted (increment); falling
edges of signal A (decrement)
X2: rising & falling edges of signal A are counted
X4: rising & falling edges of signals A & B are counted
Quadrature LEDs Two LEDs indicate UP and DOWN direction of counting.
4 Channel Pulse/Frequency/Quadrature Module - DC Voltage type (900K01-xxxx) (cont’d)
Pulse Output Specifications
Channels Used Any one of the channels can be used for Pulse Output.
However, the use of a particular channel for outputting pulses
will render the particular input channel unusable for either of
pulse, frequency or quadrature input.
Digital Output Type Open Collector, 5 to 24V, 30 mA max
Frequency Range 25 Hz – 10 KHz
Duty cycle Always 50%
Pulse Output Duration Selectable CONTINUOUS or NUMBERED PULSES.
Channels Used Any one of the channels can be used for Pulse Output.
However, the use of a particular channel for outputting pulses
will render the particular input channel unusable for either of
pulse, frequency or quadrature input.
Digital Output Type Open Collector, 5 to 24V, 30 mA max
Frequency Range 25 Hz – 10 KHz
Duty cycle Always 50%
Pulse Output Duration Selectable CONTINUOUS or NUMBERED PULSES.