Allen-Bradley 1746-HSCE User manual

High-Speed Counter Module
(Catalog Numbers 1746-HSCE)
Installation Instructions
Important User Information.........................2
For More Information...................................3
High-Speed Counter Module Overview.......4
Dip Switch and Jumper Locations...............7
Installing the Module .................................10
Removing the Terminal Block....................11
Important Wiring Considerations...............12
Encoders...................................................14
Specifications............................................20
page
Inside..
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Publication 1746-5.16
Important User Information
Because of the variety of uses for the products described in this publication, those
responsible for the application and use of this control equipment must satisfy
themselves that all necessary steps have been taken to assure that each
application and use meets all performance and safety requirements, including any
applicable laws, regulations, codes and standards.
The illustrations, charts, sample programs and layout examples shown in this
guide are intended solely for purposes of example. Since there are many
variables and requirements associated with any particular installation,
Allen-Bradley does not assume responsibility or liability (to include intellectual
property liability) for actual use based upon the examples shown in this
publication.
Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application,
Installation, and Maintenance of Solid-State Control (available from your local
Allen-Bradley office), describes some important differences between solid-state
equipment and electromechanical devices that should be taken into consideration
when applying products such as those described in this publication.
Reproduction of the contents of this copyrighted publication, in whole or in part,
without written permission of Allen-Bradley Company, Inc., is prohibited.
Throughout these installation instructions we use notes to make you aware of
safety considerations:
Attention statements help you to:
• identify a hazard
• avoid the hazard
• recognize the consequences
!ATTENTION: Identifies information about practices or
circumstances that can lead to personal injury or death, property
damage or economic loss.
Important:
Identifies information that is critical for successful application and
understanding of the product.

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For More Information
As part of our effort to preserve, protect, and improve our environment,
Allen-Bradley is reducing the amount of paper we use. Less paper means more
options for you. In addition to traditional printed publications and CD-ROM
versions, we now offer on-line manuals with the most up-to-date information you
can get. We recommend that you read the related publications listed below before
starting up your control system.
Related Publications
If you would like a manual, you can:
• download a free electronic version from the internet:
www.theautomationbookstore.com
• purchase a printed manual by:
— contacting your local distributor or Rockwell Automation
representative
— visiting www.theautomationbookstore.com and placing your order
— calling 1.800.963.9548 (USA/Canada) or
001.330.725.1574 (Outside USA/Canada)
For Refer to this Document Pub. No.
A more detailed description on how to
configure and program the High-Speed
Counter Module. High-Speed Counter Module
User Manual 1746-6.5
A more detailed description on how to install
and use your modular SLC 500 system. SLC 500 Modular Hardware
Style Installation and
Operation Manual 1747-6.2
A reference manual that contains status file
data, instruction set, and troubleshooting
information.
SLC 500 and MicroLogix
1000 Instruction Set
Reference Manual 1747-6.15
A CD-ROM containing both of the manuals
listed above, plus the:
•SLC 500 Analog I/O Modules User Manual
•Discrete I/O Modules Installation Instructions
•Discrete I/O Modules Product Data
SLC500Literature Collection
on CD-ROM 1747-CD1-1
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Publication 1746-5.16
High-Speed Counter Module Overview
The High-Speed Counter Module, Catalog Number 1746-HSCE is an SLC 500
family compatible device. It can be used with SLC 5/02 (and above)
processors.(1)
The module’s bidirectional counting ability allows it to detect movement in
either direction. In addition, x2 and x4 counting modes are provided to fully use
the capabilities of high-resolution quadrature encoders.
High-speed inputs from quadrature encoders and various high-speed switches are
supported. Accepting input pulse frequencies of up to 50k Hz allows precise
control of fast motions.
In addition to providing an Accumulated Counter, the module provides a Rate
Counter to determine Rate Measurement by indicating the pulse input frequency
in Hz. (Refer to the block diagram on the following page.) The Rate
Measurement is determined by accumulating input pulses over a fixed period of
time. You set the Rate Period to best match your application requirements.
Background Rate calculation is provided in Sequencer and Range Modes. This
operation accepts input rates up to 32,767 Hz. The dynamically configurable
Rate Period ranges from 10 ms to 2.55 seconds.
The module’s four current sink (open collector) outputs can be controlled from
one of two sources:
• the user program
•themodule
Control of the counter reset is configured through user-set parameters. The
counter can be reset from any combination of the Z input, Limit Switch input, or
Soft Reset control bits.
(1) The 1746-HSCE High-Speed Counter Module is not compatible with the 1747-ASB Remote I/O
Adapter Module.

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5
Module operation is determined by selections made in the Setup and Control
Word (M0:e.1). Setting the Function Control bit to 1 triggers the module to start
the proper pulse counter, rate measurement, and output control functions. Many
parameters are dynamic and can be changed without disrupting counter
operation.
A block diagram of the module is shown below. Inputs from the terminal block
enter the diagram at the left, outputs to the terminal block exit at the right. M0
and Output file parameters from the SLC enter the logic blocks from the top.
Input file data to the SLC exit the logic blocks from the bottom.
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Counter Input
Parameters
Pulse and
Direction
Rate Period
Parameters
Rate
Counter
Rate
Measurement
Reset
Parameters
Input
Logic
Reset
Logic
Reset
Condition
ResetInput
Bi
t
Pulse
Counter
Pulse
Counter
Inputs
Pulse Counter
Parameters
Rate
Counter Input
s
Accumulated
Count
Operating Mode
Parameters
OperatingMode
Logic
Rate
Sequencer
Range
Operating
mode
Outputs
OutputControl
Parameters
Operating Mode
Inputs
Output Status
Inputs
Physical
Outputs
Output
Control
Logic
To Terminal Block
From Terminal Block
LS Filter
(JW1)
A
B
Z
LS
Counter Input Parameters
Input Type (MO:e.1/9-11)
Up/Down Count Direction (MO:e 1/3) -d
Reset Parameters
Soft Reset bit (MO:e. 1/4) -d
Reset Mode (MO:e.1/5-7)
Rate Period Parameters
Rate Period (MO:e.9/0-7 or MO:e.16/0-7) -d
Operating Mode parameters
Operating Mode (MO:e.1/14-15)
Function Control Bit (MO:e.1/12)
Range Definitions:
Range Starting Values(MO:e.10-33) -d
Range Ending Values (MO:e.10-33) -d
Range Outputs (MO:e. 3-8) -d
Valid Ranges (MO:e.2) -d
Sequencer Definitions
Valid Steps (MO:e.2 and MO:e.3/0-7) -d
Step Presets (MO:e.17-40)
Step Outputs (MO:e.4-15)
Initial Outputs (MO:e.3/8-15) -d
Sequencer Reset (MO:e.1/0) -d
Critical Error (I:e.0/10)
Configuration Error bit (I:e.0/11)
Configuration Error Code (I:e.4/0-7)
-d indicates a dynamic parameter
Pulse Counter Parameters
Reset Value (MO:e.34 or MO:e.41) -d
Maximum Count Value (MO:e.34 or MO:e.41
Counter Hold bit (MO:e.1/2) -d
Counter Type bit (MO:e.1/13)
Output Control Parameters
Direct Outputs (O:e.0/0-7) -d
Output Source Select (MO:e.0/0-7) -d
Enable Outputs bit (MO:e.1/1) -d
Rate Counter Inputs
Rate Valid (I:e.0/3)
Rate Counter Overflow (I:e.0/4)
Rate Measurement Overflow (I”e.0/5)
Zero Rate Period Count (I:e.0/2)
Rate Period Count (I:e.2)
Rate Measurement (I:e.3)
Pulse Counter Inputs
Accumulated Count (I:e.1)
Overflow/Underflow (I:e.0/13)
Pulse Counter State (I:e.0/14-15)
Operating Mode Inputs
Sequencer Inputs
Current Sequencer Step (I:e.5/0-7)
Next Sequencer Step (I:e.5/8-15)
Sequence Done (I:e.0/6)
Range inputs
Ranges Active (I:e.6/0-11)
Output Status Inputs (I:e.4/8-15)
Error Inputs

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Dip Switch and Jumper Locations
Two dip switches (SW1 and SW2) and one jumper (JW1) are located on the side
of the module.
• SW1 selects the type of input (single ended or differential).
• SW2 selects the output voltage range (4.5-10V dc or 10-30V dc).
• JW1 selects the filtering rate (300 µs or 10 ms) used to debounce the limit
switch input.
Default settings are shown below:
!ATTENTION: Use a small screwdriver to change dip switch
positions. Graphite from pencils will damage the switch.
1234
N
O1234
N
O
1
3
SW2 Default
10-30V dc
JW1 Default
10 mS Filter
SW1 Default
Single-Ended Operation
SW2
JW1
SW1
JW1
SW2
JW1
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SW2 Settings
Select an output voltage range that coincides with your supply voltage. The
selections are 4.5 - 10V dc or 10 - 30V dc.
SW1 Settings
Select an input connection, single-ended or differential.
It is possible to configure different inputs in different modes. For example, input
A (CHA) can be configured as differential and input Z (CHZ) can be configured
as single-ended.
!ATTENTION: All switches of SW2 must be ON or all switches
must be OFF. Permanent damage may result if some are ON and
some are OFF.
Operating in the 10-30V dc range with the switches set for the
4.5-10V dc range damages the module.
1234
1234
ON
OFF
ON
OFF
10-30V dc
4.5-10V dc
Switch
Output
1
02 13
24 3
123 4
ABZ
1234
ON
OFF
Switch
Channel not used
Dip switch SW1
ON
OFF
Position Input Connection Input ON range
differential
single-ended
2.8-4.5V dc
3.1-5.5V dc

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JW1 Settings
Select 300 µs or 10 ms filtering to debounce the limit switch input. Position the
jumper as follows:
The LS input allows you to make a direct connection to nominal voltage levels of
5, 12, or 24V dc. The ON voltage ranges are as follows:
Refer to pages 19 and 20 for limit switch wiring instructions.
Wiring Terminal ON range
LS (24V dc) 16.5-30V dc
LS (12V dc) 9.4-16.5V dc
LS (5V dc) 3.8-5.5V dc
!ATTENTION: Only connect one LS input range at a time.
Otherwise, the module will be damaged.
321 321
JW1
10 ms filter
JW1
300 µs filter
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Installing the Module
Installation procedures for this module are the same as any other discrete I/O or
specialty module.
1. Align the full-size circuit board with the rack card guide. The first slot (slot
0) of the first rack is reserved for the CPU.
2. Slide the module into the rack until the top and bottom latches are latched.
To remove the module, press the releases at the top and bottom of the
module and slide it out.
Important:
Set the dip switches before installing the module.
!ATTENTION: Disconnect power before attempting to install,
remove, or wire the module.
Make sure your SLC power supply has adequate reserve current
capacity. The module requires 320 mA at 5V dc.
1
1
2
3
4

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3. Make sure the removable terminal wiring block is attached to the module
and all wires are connected to the terminal block.
4. Insert the cable tie in the slots and secure the cable.
5. Cover all unused slots with the Card Slot Filler, Catalog Number 1746-N2.
Removing the Terminal Block
The removable terminal wiring block eliminates the need to rewire a module if it
is removed from the rack. Each terminal accepts two #14 AWG wires.
Remove the terminal block by turning the slotted terminal block release screws
counterclockwise. The screws are attached to the terminal block, so it will follow
as the screws are turned out.
Wiring the Removable Terminal Block
The terminal screws can be turned with flat or cross slot screwdrivers. Each
screw should be turned tight enough to immobilize the wire’s end.
Overtightening can strip the terminal screw. The torque applied to each screw
should not exceed 0.7-0.9 Nm (6-8 inch pounds).
!ATTENTION: Disconnect power before attempting to install,
remove, or wire the removable terminal wiring block.
To avoid cracking the removable terminal block, alternate the
removal of the slotted terminal block release screws.
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Important Wiring Considerations
Use the following guidelines when planning the system wiring for the module:
• Install the SLC 500 system in a NEMA-rated enclosure.
• Disconnect power to the SLC processor and the module before wiring.
• Make sure the SLC 500 system is properly grounded.
• Group this module and low-voltage DC modules away from AC I/O or
high-voltage DC modules.
• Shielded cable is required for high-speed input signals A, B, and Z. We
recommend Belden 9503 or equivalent for lengths up to 305 m (1000 ft).
• When the LS input is driven by an electromechanical device, route the
wiring away from other inputs. In addition, JW1 should be set for the 10 ms
filter.
• When the LS input is driven by a solid-state device, use a shielded cable.
You do not have to route the cable away from other inputs.
• Shields should be grounded only at the end of the signal source end of the
cable. Ground the shield to the case of the signal source, so energy coupled
to the shield will not be delivered to signal source’s electronics.
Input and Output Connections
Input and output wiring terminals are located on the front of the module, behind
the terminal cover. When you connect input and output devices, you must also be
concerned with the settings of dip switch SW1 (input connections), dip switch
SW2 (output connections), and jumper JW1 (limit switch input connections). The
location and description of these are shown on pages 7 through 9.

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Outputs
The module provides four physical outputs. They can be controlled by the
module when certain counter conditions are met, or they can be controlled from
the user program (refer to High-Speed Counter Module User Manual, publication
1746-6.5 for M0:e.0 information).
The outputs are bipolar transistors connected in a sinking (open collector sinking)
configuration. When the output is energized, it sinks the current.
1
2
3
4
5
6
7
0A
BZ LS
OUTPUT INPUT
FAULT
HSCE
Upper Retaining Screw Maximum
Torque = 0.7-0.9 Nm (6-8 in-lbs)
VDC
OUT 1
OUT 3
A+
A-
Not
Used
Z+
Z-
LS
COM
OUT 0
OUT 2
DC
COM
B+
B-
Not
Used
LS
(24V dc)
LS
12V dc)
LS
(5V dc)
Lower Retaining Screw Maximum
Torque = 0.7-0.9 Nm (6-8 in-lbs)
Discrete Output Wiring
NOTE: VDC must be externally
supplied by the user. See page
14 for output wiring.
Terminal Wiring
-max. #14 AWG (2mm
2
)
max. 2 wires per terminal
max. torque: 0.9 Nm (8 in-lbs)
Limit Switch and Encoder
Input Wiring
See pages 14 through 20 for
input wiring.
VDC
OUT 0
OUT 1
OUT 2
OUT 3
DC COM
A+
B+
A-
B-
Not used
Not used
Z+
LS (24VDC)
Z-
LS (12VDC)
LS COM
LS (5VDC)
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You can select an output voltage range of 4.5-10V dc or 10-30V dc. Refer to page
22 for the maximum current specifications for each voltage range. Dip switch
SW2, located on the PC board, is used to select the voltage range. Refer to pages
7 through 9 for switch SW2 location and settings.
The figure below indicates wiring connections for four 24V dc outputs. Switches
of SW2 are OFF for this output voltage.
The outputs are not electrically isolated from each other. (They are referenced to
the same output common terminal.) However, outputs are isolated from the rest
of the circuitry to a level of 1500 volts.
Encoders
The wiring diagrams on the following pages are provided to support the
Allen-Bradley encoders you may already have. Differential encoders provide the
best immunity to electrical noise. We recommend, whenever possible, to use
differential encoders.
!ATTENTION: Do not use incandescent lamps as output
indicators. The high peak inrush current required to heat the
filament can damage the module’s output circuits. Use LED type
indicators that satisfy the output circuit ratings, such as
Allen-Bradley 800A and 800T LED indicators.
+
±
1234
User Supplied
24V dc
wiring terminals
VDC
OUT 0
OUT 1
OUT 2
OUT 3
DC COM
All switches OFF
ON
OFF
Dip Switch SW2
HSCE module

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Differential Encoder Wiring
A
A
B
B
Z
Z
A(+)
A(±)
B(+)
B(±)
Z(+)
Z(±)
1234
cable
(
1
)
Belden 9503 or equivalent
305m (1000ft) max length
Power
Supply
+ VDC
COM
VS
GND
Allen-Bradley
845H Series
differential
encoder
encoderconnector
housing Earth
Shield
(2)
Module Inputs
SW1 ON
OFF
(all switches ON)
(1) Refer to your encoder manual for proper cable type and length.
(2) Due to the topology of the module’s input circuits, terminating the shield at the encoder end
provides the highest immunity to EMI interference. Connect EARTH ground directly to the
encoder connector housing.
A
A
B
B
Z
Z
The illustration below shows the different encoder output waveforms. If your encoder matches these
waveforms, the encoder signals can be directly connected to the associated screw terminals on the
module. For example, the A lead from the encoder is connected to the module’s A+ screw. If your
encoder does not match these waveforms, some wiring modifications may be necessary. Refer to
appendix C in
High-Speed Counter Module User Manual , publication 1746-6.5 for a description of
these modifications.
Differential Encoder Output Waveforms
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Single-Ended Encoder Wiring (Open Collector)
VS Value R Value Maximum Output Leakage
+5V dc 150 ohm 1/4W 5% 6.3 mA
+12V dc 1800 ohm 1/4W 5% 1.5 mA
+24V dc 4700 ohm 1/4W 5% 1.2 mA
A
B
Z
A(+)
A(±)
B(+)
B(±)
Z(+)
Z(±)
R
1234
Belden 9503 or equivalent
305m (1000tft) max length
Power
Supply
+ VDC
COM
VS
GND
Allen-Bradley
845H Series
single-ended
encoder
encoder connector
housing Earth
Shield
(2)
Module Inputs
SW1ON
OFF
(All switches OFF)
cable
(1)
(1) Refer to your encoder manual for proper cable type and length.
(2) Due to the topology of the module’s input circuits, terminating the shield at the encoder end
provides the highest immunity to EMI interference. Connect EARTH ground directly to the
encoder connector housing.
(3) The pullup resistor (R) value depends on the power supply value (VS). The table below lists
the resistor values for typical power supply values. These resistors must be located at the
encoder end of the cable.
(3)
A
B
Z
The figure below shows the single-ended encoder output waveforms. When the waveform is low,
the encoder output transistor is ON.
low = transistor ON
high = transistor OFF
Single-Ended Encoder Output Waveforms

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Single-Ended Encoder Wiring (Sourcing)
(4) The Allen-Bradley 845H sourcing encoder is not compatible with this module.
VS Value R Value Maximum Output Leakage
+5V dc no resistor needed 6.3 µA
+12V dc 1800 ohm 1/4W 5% 1.5 µA
+24V dc 4700 ohm 1/4W 5% 1.2 µA
R
R
A
Z
A(+)
A(±)
B(+)
B(±)
Z(+)
Z(±)
B
1234
R
Belden 9503 or equivalent
305m (1000tft) max length
Power
Supply
+ VDC
COM
VS
GND
Shield
(2)
Module Inputs
SW1 ON
OFF
(All switches OFF)
cable
(1)
single ended
encoder
(4)
(1) Refer to your encoder manual for proper cable type and length.
(
2) Due to the topology of the module’s input circuits, terminating the shield at the encoder end
provides the highest immunity to EMI interference. Connect EARTH ground directly to the
encoder connector housing.
(
3) The resistor (R) value depends on the power supply value (VS). The table below lists the
resistor values for typical power supply values. These resistors must be located at the encoder
end of the cable.
(3)
(3)
(3)
A
B
Z
Si
ng
l
e-
E
n
d
e
d
E
nco
d
er
O
utput
W
ave
f
orms
The figure below shows the single-ended encoder output waveforms. When the waveform is low, the
encoder output transistor is OFF.
low = transistor OFF
high = transistor ON
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Single-Ended Wiring (Discrete Devices)
• This diagram shows the sensors operation from a common power supply.
Separate power supplies for each circuit can be used.
• The resistor (R1) value depends on the power supply value (VS). The table
below lists the resistor values for typical power supply values. These
resistors must be located at the module end of the cable.
• The pullup resistor (R2) value depends on the power supply value (VS).
The table below lists the resistor values for typical power supply values.
These resistors must be located at the sensor end of the cable.
Important:
VS Value R1 Value Maximum Output Leakage
+5V dc no resistor needed 100 µA
+12V dc 1800 ohm 1/4W 5% 100 µA
+24V dc 4700 ohm 1/4W 5% 100 µA
VS Value R1 Value Maximum Output Leakage
+5V dc 150 ohm 1/4W 5% 6.3 mA
+12V dc 1800 ohm 1/4W 5% 1.5 mA
+24V dc 4700 ohm 1/4W 5% 1.2 mA
1234
A(+)
A(±)
B(+)
B(±)
Z(+)
Z(±)
R1
R2
proximity sensor
with sourcing output
photoelectric sensorwith open
collector sinking output
solid-state
switch
(5V output)
Power
Supply
Module Inputs
SW1ON
OFF
(All switches OFF)
VS
OUT
COM
VS
OUT
COM
VS
OUT
COM
+VDC
COM

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Limit Switch Wiring (24V dc Hard Contact)
Limit Switch Wiring (12V dc Hard Contact)
!ATTENTION: Only connect one LS input range at a time.
Otherwise, the module will be damaged.
!ATTENTION: Only connect one LS input range at a time.
Otherwise, the module will be damaged.
+
±
321
Hard Contact
Limit Switch HSCE module
JW1
Jumper placed
for 10 ms filtering
Do not connect LS (5V dc) or
LS (12V dc) Terminals
24V dc
VS
COM
LS (24V dc)
LS (12V dc)
LS (5V dc)
LS COM
+
±
321
Hard Contact
Limit Switch
HSCE module
JW1
Jumper placed
for 10 ms filtering
Do not connect LS (5V dc) or
LS (12V dc) Terminals
12V dc
VS
COM
LS (24V dc)
LS (12V dc)
LS (5V dc)
LS COM
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Limit Switch Wiring (5V dc Solid State)
Specifications
General
!ATTENTION: Only connect one LS input range at a time.
Otherwise, the module will be damaged.
Operating Temperature 0 ° C to +60 ° C (+32 ° F to +140 ° F)
Storage Temperature -40
° C to +85 ° C (-40 ° F to +185 ° F)
Humidity 5 to 95% without condensation
Backplane Current Consumption
(power supply loading) 320 mA at +5V dc 0 mA at +24V dc
Maximum Cable Length(1)
(1) Belden 9503 or equivalent
305 m (1000 ft)
Agency Certification
(when product or packaging is
marked)
•CSA certified
•CSA Class I, Division 2
Groups A, B, C, D certified
•UL listed
•CE marked for all applicable directives
+
±
321
Solid State
Limit Switch HSCE module
Do not connect LS (12V dc) or
LS (24V dc) Terminals
Jumper placed
for 300 µs
filtering
JW1
5V dc
VS
COM
LS (24V dc)
LS (12V dc)
LS (5V dc)
LS COM
COM
OUT
VS