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USB-SSR24
USB-based 24 Solid-state Relay Module
Interface Device
User's Guide
Document Revision 5, August, 2006
© Copyright 2006, Measurement Computing Corporation
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HM USB-SSR24.doc i ii
Table of Contents
Preface
Chapter 1
Chapter 2
Chapter 3
Chapter 4
iv
USB-SSR24 User's Guide
v
Preface
About this User's Guide
What you will learn from this user's guide
This user's guide explains how to install, configure, and use the USB-SSR24 so that you get the most out of its solid state relay features. This user's guide also refers you to related documents available on our web site, and to technical support resources.
Conventions in this user's guide
For more information on …
Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading.
Caution! Shaded caution statements present information to help you avoid injuring yourself and others, damaging your hardware, or losing your data.
<
#:#>
bold text
italic text
Angle brackets that enclose numbers separated by a colon signify a range of numbers, such as those assigned to registers, bit settings, etc.
Bold text is used for the names of objects on the screen, such as buttons, text boxes, and check boxes. For example:
1. Insert the disk or CD and click the OK button.
Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase. For example:
The InstaCal installation procedure is explained in the Quick Start Guide.
Never touch the exposed pins or circuit connections on the board.
Where to find more information
The following electronic documents provide information relevant to the operation of the USB-SSR24.
MCC's Specifications: USB-SSR24 (the PDF version of the Specifications chapter in this guide) is available on our web site at www.mccdaq.com/pdfs/USB-SSR24.pdf
.
MCC's Quick Start Guide is available on our web site at www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf
.
MCC's Guide to Signal Connections is available on our web site at www.mccdaq.com/signals/signals.pdf
.
MCC's Universal Library User's Guide is available on our web site at www.mccdaq.com/PDFmanuals/sm-ul-user-guide.pdf
.
MCC's Universal Library Function Reference is available on our web site at www.mccdaq.com/PDFmanuals/sm-ul-functions.pdf
.
MCC's Universal Library for LabVIEW
™
User’s Guide is available on our web site at www.mccdaq.com/PDFmanuals/SM-UL-LabVIEW.pdf
.
USB-SSR24 User's Guide (this document) is also available on our web site at www.mccdaq.com/PDFmanuals/USB-SSR24.pdf
. vi
Chapter 1
Introducing the USB-SSR24
Overview: USB-SSR24 features
This user's guide contains all of the information you need to connect the USB-SSR24 to your computer and to the external devices you want to control.
The USB-SSR24 is a USB 2.0 high-drive, full-speed, solid state relay board supported under popular
Microsoft
®
Windows
®
operating systems.
This manual explains how to install and configure the USB-SSR24. The USB-SSR24 is designed for use in your control applications to switch on and off a variety of devices, such as fans, blowers, pumps, etc.
The USB-SSR24 is a mounting rack for 24 solid state relay (SSR) modules. The backplane is divided into two groups of eight modules and two groups of four modules. You set the module type for each module group with an on-board switch. You cannot mix input and output modules within a group.
The control logic polarity for each module group is switch-settable for active high or low logic. The power-up state for output modules is switch-settable with an on-board switch. Independent LEDs at each module position indicate the on/off status of each module. Switch settings can be read back with software.
The USB-SSR24 has 24 pairs of screw terminals for your field wiring connections. Positive (+) and negative (-) relay contacts are brought out to the screw terminals.
The USB-SSR24 is powered by an external 9 V, 1 A regulated power supply that is shipped with the device. A
USB cable is also included. USB out and power out connections let you power multiple MCC USB Series products from a single external power source in a daisy chain fashion.
The USB-SSR24 is shipped in a rugged enclosure that you can mount on a DIN rail or on a bench.
1-1
USB-SSR24 User's Guide Introducing the USB-SSR24
Compatible SSR modules
The USB-SSR24 board has locations for 24 solid state relay modules that you can install in your USB-SSR24 board. The SSR modules use a standard color scheme so you can quickly identify what module type is installed.
Mounting screw threads are provided for you to easily install the SSR modules.
MCC offers SSR modules that are compatible with the USB-SSR24:
SSR-IAC-05
SSR-IAC-05A
SSR-IDC-05
SSR-IDC-05NP
SSR-OAC-05
SSR-OAC-05A
SSR-ODC-05
SSR-ODC-05A
SSR-ODC-05R
Details on these SSR modules are available from our web site at www.mccdaq.com/products/signal_conditioning.aspx
.
Remove the USB-SSR24 from the enclosure to install SSR modules
You must remove the USB-SSR24 from the enclosure to access the solid state relay module mounting positions.
USB-SSR24 block diagram
USB-SSR24 functions are illustrated in the block diagram shown here.
Switch S1
(I/O type)
9.0 V
External
Power
SSR Modules 1-8 (Port A)
8
Relay driver
Power
Monitor
Load
Power
Regulator
SSR Modules 9-16 (Port B)
8
Relay driver
USB
Microcontroller
4
Relay driver
SSR Modules 17-20 (Port CL)
4
Relay driver
SSR Modules 212-24 (Port CH)
Switch S3
(pull-up/down)
Figure 1-1. USB-SSR24 functional block diagram
500 mA
USB 2.0
compliant interface
Switch S2
(inv/non-inv)
1-2
USB-SSR24 User's Guide Introducing the USB-SSR24
Software features
For information on the features of InstaCal and the other software included with your USB-SSR24, refer to the
Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf
.
Check www.mccdaq.com/download.htm
for the latest software version or versions of the software supported under less commonly used operating systems.
Connecting a USB-SSR24 to your computer is easy
Installing a data acquisition device has never been easier.
The USB-SSR24 relies upon the Microsoft Human Interface Device (HID) class. The HID class ships with every copy of Windows that is designed to work with USB ports. We use the Microsoft HID because it is a standard, and its performance delivers full control and maximizes data transfer rates for your USB-SSR24.
No third-party device driver is required.
You can connect the USB-SSR24 before or after you install the software, and without powering down your computer first.
When you connect an HID to your system, your computer automatically detects it and configures the necessary software. You can connect and power multiple HID peripherals to your system using a USB hub.
You can connect your system to various devices using a standard four-wire cable. The USB connector improves upon serial and parallel port connectors with one standardized plug and port combination.
Data can flow two ways between a computer and peripheral over USB connections.
1-3
Installing the USB-SSR24
What comes with your USB-SSR24 shipment?
As you unpack your USB-SSR24, make sure that the following components are included.
Hardware
USB-SSR24
Chapter 2
External power supply and cord (CB-PWR-9) – 9 volt, 1 amp DC power supply
USB cable (2 meter length)
Additional documentation
In addition to this hardware user's guide, you should also receive the Quick Start Guide (available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf
). This booklet supplies a brief description of the software you received with your USB-SSR24 and information regarding installation of that software. Please read this booklet completely before installing any software or hardware.
2-1
USB-SSR24 User's Guide Installing the USB-SSR24
Unpacking the USB-SSR24
As with any electronic device, you should take care while handling to avoid damage from static electricity. Before removing the USB-SSR24 from its packaging, ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge.
If your USB-SSR24 is damaged, notify Measurement Computing Corporation immediately by phone, fax, or email. For international customers, contact your local distributor where you purchased the USB-SSR24.
Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: [email protected]
Installing the software
Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data
Acquisition Software CD. This booklet is available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-
Quick-Start.pdf
.
Installing the USB-SSR24
Before you connect the USB-SSR24 to your computer, configure the hardware and then connect the external power supply that was shipped with the device. You can connect up to four MCC USB Series products in a daisy chain configuration to a single USB 1.1 port or USB 2.0 port on your computer.
Configuring the hardware switches
The USB-SSR24 has three on-board switches that you set to configure the I/O module type, relay logic polarity, and relay power-up state. Configure these switches before you connect the external power supply to the USB-
SSR24. Factory-configured default settings are listed in
. Refer to Fi gure 3-1 for the location of each
switch.
Remove from the enclosure to access the on-board switches
To change the configuration of a switch, you must first remove the USB-SSR24 from the enclosure. Turn external power off before changing the switch settings.
Table 2-1. Default switch configuration
Board Label
IN OUT (S1)
NON INVERT INVERT
(S2)
P/UP P/DN (S3)
Description Default setting
Configures the I/O type per group for input or output. OUT (Output)
Configures the relay logic parity per module group for invert or non-invert logic.
NON INVERT
(active low)
Configures the power-up state of output relays for pull-up or pull-down. P/UP (Pull-up)
Each DIP switch sets the configuration of one module group. The switch labeled
A
configures modules 1 through 8, the switch labeled
B
configures modules 9 through 16, the switch labeled
CL
configures modules 17 through 20, and the switch labeled
CH
configures modules 21 through 24. You can use InstaCal to read the current configuration of each switch.
Configures modules 21-24
Configures modules 17-20
Configures modules 9-16
Configures modules 1-8
CH
CL
B
A
Figure 2-2. Typical board switch
2-2
USB-SSR24 User's Guide Installing the USB-SSR24
I/O module type
Configure switch
S1
to set the type of each module group for input or output. You cannot mix input and output modules within a group. By default, switch S1 is shipped with all modules configured for output, as shown in
IN
S1
OUT
CH
CL
B
A
Figure 2-3. I/O module type switch (S1)
Control logic polarity
Configure switch
S2
to set the control logic polarity for each module group for inverted (active high) or noninverted (active low, default) logic. By default, these devices are shipped with switch S2 set to NON INVERT
(all modules configured for non-inverted logic - active low), as shown in F igure 2-4 .
CH
CL
B
A
NON
S2
INVERT
INVERT
Figure 2-4. Control logic polarity switch (S2)
For input modules,
invert
mode returns a "1" when the modules are active.
Non-invert
mode returns a "0" when the modules are active.
For output modules,
invert
mode allows you to write a "1" to activate the module.
Non-invert
mode allows you to write a "0" to activate the module.
The I/O type and the relay logic settings control what happens when a module is activated. For example, a module group configured for SSR input with non-inverted logic outputs a low logic level when the module is
ON. A module group configured for SSR output with non-inverted logic requires a low logic level to turn the output module ON.
Relay power-up state configuration
Configure switch
S3
to set the state of the output relays at power-up. By default, this product is shipped with switch S3 configured for pull-up for all banks (modules inactive on power-up), as shown in
The relay settings are labeled
P/UP
and
P/DN
on the switch. When switched to
P/DN
(pull-down), modules are active on power-up.
P/UP
S3
P/DN
CH
CL
B
A
Figure 2-5. Relay power-up state switch (S3)
2-3
USB-SSR24 User's Guide Installing the USB-SSR24
Connecting the external power supply
Power to the USB-SSR24 is provided with the 9 V, 1 A external power supply (MCC p/n CB-PWR-9). You must connect the external power supply before connecting the USB connector to the USB-SSR24.
To connect the power supply to your USB-SSR24, do the following:
1.
Connect the external power cord to the power connector labeled
POWER IN
on the USB-SSR24 enclosure
(
PWR IN
on the board). Refer to Fi gure 3-1 for the location of this connector.
2.
Plug the AC adapter into a power outlet.
The
PWR
LED lights up when 9 V power is supplied to the USB-SSR24. If the voltage supply is less than 6.0 V or more than 12.5 V, the
PWR
LED does not light up.
Do not connect external power to the POWER OUT connector
The power connector labeled
POWER OUT
on the enclosure (
PWR OUT
on the board) is used to provide power to an additional MCC USB Series product. If you connect the external power supply to the
POWER OUT
connector, the USB-SSR24 does not receive power, and the
PWR
LED does not light up.
Connecting the USB-SSR24 to your system
To connect the USB-SSR24 to your system, do the following.
1.
Turn your computer on.
2.
Connect the USB cable to the USB connector labeled
USB IN
on the USB-SSR24.
3.
Connect the other end of the USB cable to a USB port on your computer or to an external USB hub that is connected to your computer. The
USB LED
lights up. The USB cable provides communication to the USB-
SSR24.
When you connect the USB-SSR24 for the first time, a
Found New Hardware
popup balloon (Windows XP) or dialog (other Windows versions) opens as the USB-SSR24 is detected.
When installation is complete, the
USB
LED should flash and then remain lit. This indicates that communication is established between the USB-SSR24 and your computer.
If the USB LED turns off
If the USB LED is lit but then turns off, the computer has lost communication with the USB-SSR24. To restore communication, disconnect the USB cable, and then reconnect it. This should restore communication, and the
USB LED should turn back on.
If you are running Windows XP and connect the USB-SSR24 to a USB 1.1 port, a balloon displays the message
"
Your USB device can perform faster if you connect to a USB 2.0 port
." You can ignore this message. The
USB-SSR24 will function properly when connected to a USB 1.1 port
Caution! Do not disconnect any device from the USB bus while the computer is communicating with the
USB-SSR24, or you may lose data and/or your ability to communicate with the USB-SSR24.
2-4
Chapter 3
Functional Details
Internal components
The USB-SSR24 has the following internal components, as shown in Figure 3-1.
Two (2) USB connectors
Two (2) external power connectors
USB LED
PWR LED
I/O module type switch (
S1
)
Control logic polarity switch (
S2
)
Power-up state configuration switch (
S3
)
Screw terminals
USB IN POWER IN
USB
OUT
POWER
OUT
Power-up state configuration switch (S3)
I/O module type switch (S1)
Control logic polarity switch (S2)
PWR LED
USB LED
Screw terminals
Figure 3-1. USB-SSR24 component locations
USB connectors
The USB-SSR24 has two USB connectors labeled
USB IN
and
USB OUT
on the enclosure and on the board.
Connect the
USB IN
connector to the USB port on your computer (or USB hub connected to your computer) using the supplied USB cable.
The
USB OUT
connector is a downstream hub output port intended for use with other MCC USB Series products only. The USB hub is self-powered, and can provide
100 mA
maximum current at 5 V.
USB-SSR24 devices " on page 3-3.
External power connectors
The USB-SSR24 has two external power connectors labeled
POWER IN
and
POWER OUT
on the enclosure.
The
POWER IN
connector is labeled
PWR IN
on the board, and the
POWER OUT
connector is labeled
PWR
OUT
on the board.
Connect the
POWER IN
connector to the supplied +9 V external power supply. External power is required to operate the USB-SSR24. The
POWER OUT
connector lets you power additional daisy chained MCC USB
Series products from a single external power supply. Depending on your load requirements, daisy chained products may require a separate power supply. Refer to "
Power limitations using multiple USB-SSR08 devices
"
on page 3-4 for more information.
3-1
USB-SSR24 User's Guide Functional Details
USB LED
The
USB
LED indicates the communication status of the USB-SSR24. It uses up to 5 mA of current and cannot be disabled.
Table 3-2 explains the function of the USB LED.
Table 3-2. USB LED illumination
USB LED
Illumination
Steady green
Pulses green
Indication
The USB-SSR24 is connected to a computer or external USB hub.
Initial communication is established between the USB-SSR24 and the computer, or data is being transferred.
PWR LED
The
PWR
LED lights up when external power is supplied. The USB-SSR24 incorporates an on-board voltage supervisory circuit that monitors the external 9 V power supply.
Table 3-3 explains the function of the PWR
LED.
Table 3-3. PWR LED illumination
PWR LED illumination
Indication
Steady green External power is supplied to the USB-SSR24.
Off Power is not supplied by the external power supply, or a power fault has occurred. A power fault occurs when the input power falls outside of the specified voltage range of the external supply (6.0 V - 12.5 V).
I/O module type switch (S1)
Switch
S1
is a four-position switch that sets the type of each module group for input or output (default). You cannot mix input and output modules within a group. You can use InstaCal to read the current I/O type configuration for each module group.
Figure 3-2 shows switch S1 configured with its default settings.
IN
S1
OUT
CH
CL
B
A
Figure 3-2. Switch S1 default configuration
Control logic polarity switch (S2)
Switch
S2
is a four-position switch that sets the control logic polarity for each module group for inverted (active high) or non-inverted (active low, default).
Figure 3-3 shows switch S1 configured with its default settings. Use
InstaCal to read the current logic configuration for each module group.
CH
CL
B
A
NON
INVERT
S2
INVERT
Figure 3-3. Switch S2 default configuration
3-2
USB-SSR24 User's Guide Functional Details
Relay power-up state switch (S3)
Switch
S3
is a four-position switch that sets the state of the output relays at power-up. You can use InstaCal to
default settings.
P/UP
S3
P/DN
CH
CL
B
A
Figure 3-4. Switch S3 default configuration
Screw terminals
The USB-SSR24 has 24 screw terminal pairs for your field wiring connections. Each SSR module has a dedicated positive and negative screw terminal. Each screw terminal is identified with a label on the board and on the underside of the enclosure lid.
Caution! Before connecting wires to the screw terminals, turn off the power to the USB-SSR24, and make sure that the signal wires do not contain live voltages.
Use 12 AWG to 22 AWG wire for your signal connections. Properly insulate the wires to avoid any short circuit to the other channels, ground, or other points on the board.
Caution! Keep the length of stripped wire at a minimum to avoid a short to the enclosure! When connecting your field wiring to the screw terminals, use the strip gage on the terminal strip, or strip to 5.5 - 7.0 mm (0.215" to 0.275") long.
LED states
Independent LEDs (
D1
–
D24
) at each module position indicate the on/off status of each module. The LED lights up when an output module is active (turned on) or when an input module detects an input voltage
(logic high).
Daisy chaining multiple USB-SSR24 devices
Daisy chained MCC USB Series products connect to the USB bus through the high-speed hub on the USB-
SSR24. You can daisy chain a maximum of four MCC USB Series products to a single USB 2.0 port or USB
1.1 port on your computer. Use the supplied cable or an equivalent cable when daisy chaining MCC USB Series products.
To daisy chain two or more USB-SSR24 modules, follow the steps below. This procedure assumes you already have one USB-SSR24 connected to a computer and to an external power source. The USB-SSR24 already connected to the computer is referred to as the connected module. The USB-SSR24 you want to daisy chain to the connected module is referred to as the new module.
1.
Connect the
Power OUT
connector on the connected module to the
Power IN
connector on the new module.
This step is required only if you plan to daisy chain power to another module.
2.
Connect the
USB OUT
connector on the connected module to the USB IN connector on the new module.
3-3
USB-SSR24 User's Guide Functional Details
3. To add another module, repeat steps 1-2, with the module you just connected now being the connected
module.
A daisy chain example is shown in
Figure 3-5 . Note that the last board in the chain is supplied with external
power.
USB port to
USB IN
POWER OUT to POWER IN
CB to
PWR -
POWER IN
USB OUT to USB IN
USB OUT to USB IN
CB PWR 9 supply to POWER IN
Figure 3-5. USB-SSR24 daisy chain connections
Power limitations using multiple USB-SSR24 devices
When daisy chaining additional MCC USB Series products to the USB-SSR24, you must ensure that you provide adequate power to each board that you connect. The USB-SSR24 is powered with a 9 VDC nominal,
1.0 A external power supply.
Voltage drop
A drop in voltage occurs with each board connected in a daisy chain system. The voltage drop between the power supply input and the daisy chain output is 0.5 V maximum. Factor in this voltage drop when you configure a daisy chain system to ensure that at least 6.0 VDC is provided to the last board in the chain.
3-4
Chapter 4
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
I/O module configuration
Modules 1-8
Modules 9-16
Modules 17-20
Modules 21-24
Pull-up/pull-down on digital
I/O lines
I/O module logic polarity
Table 1. I/O module configuration specifications
Selectable via switch S1 "A" position as either input modules or output (default) modules. Switch settings for direction can be read back via software. Do not mix input and output modules within this bank of eight.
Selectable via switch S1"B" position as either input modules or output (default) modules. Switch settings for direction can be read back via software. Do not mix input and output modules within this bank of eight.
Selectable via switch S1 "CL" position as either input modules or output (default) modules. Switch settings for direction can be read back via software. Do not mix input and output modules within this bank of four.
Selectable via switch S1 "CH" position as either input modules or output (default) modules. Switch settings for direction can be read back via software. Do not mix input and output modules within this bank of four.
Configurable via switch S3 with 2.2 K ohm resistor network. Switch settings for pullup/pull-down selection can be read back via software. Default to pull-up. Switch settings are applicable during power up conditions of output modules only. Modules are active low. When switched to pull-up, modules are inactive on power up. When switched to pull-down, modules are active on power up.
Selectable via switch S2. Switch settings for polarity can be read back via software.
Default to non-inverted. For input modules, invert mode returns a "1" when module is active; non-invert mode returns a "0" when module is active. For output modules, invert mode allows users to write a "1" to activate the module; non-invert mode allows users to write a "0" to activate the module.
Power
Table 2. Power specifications
Parameter Conditions
USB +5 V input voltage range
USB +5 V supply current All modes of operation
MCC p/n CB-PWR-9 External power supply
(required)
Voltage supervisor limits -
PWR LED
Vext
<
6.0 V, Vext > 12.5 V
6.0 V < Vext < 12.5 V
External power consumption All modules on, 100 mA downstream hub power
All modules off, 0 mA downstream hub power
Specification
4.75 V min. to 5.25 V max.
10 mA max
9 V ±10% @ 1 A
PWR LED = Off (power fault)
PWR LED = On
800 mA typ, 950 mA max
200 mA typ, 220 mA max
4-1
USB-SSR24 User's Guide Specifications
External power input
Table 3. External power input specifications
Parameter Conditions Specification
External power input
Voltage supervisor limits - PWR LED
(Note 1)
External power adapter (included)
6.0 V > Vext or Vext > 12.5 V
6.0 V < Vext < 12.5 V
MCC p/n CB-PWR-9
+6.0 VDC to 12.5 VDC (9 VDC power supply included)
PWR LED = Off (power fault)
PWR LED = On
+9 V ±10%, @ 1 A
Note 1:
The USB-SSR24 monitors the external +9 V power supply voltage with a voltage supervisory circuit. If this power supply exceeds its specified limit, the PWR LED will turn off indicating a power fault condition.
External power output
Table 4. External power output specifications
Parameter Conditions Specification
External power output - current range
External power output (Note 2)
Compatible cable(s) for daisy chain
Voltage drop between power input and daisy chain power output
C-MAPWR-x
4.0 A max.
0.5 V max x = 2 , 3, or 6 feet
Note 2:
The daisy chain power output option allows multiple Measurement Computing USB boards to be powered from a single external power source in a daisy chain fashion. The voltage drop between the module power supply input and the daisy chain output is 0.5 V max. Users must plan for this drop to assure the last module in the chain will receive at least 6.0 VDC.
USB specifications
USB "B" connector
USB device type
Device compatibility
USB "A" connector
USB hub type
Compatible products
USB cable type (upstream and downstream)
USB cable length
Table 5. USB specifications
Input
USB 2.0 (full-speed)
USB 1.1, USB 2.0
Downstream hub output port
Supports USB 2.0 high-speed, full-speed and low-speed operating points
Self-powered, 100 mA max downstream VBUS capability
MCC USB Series devices
A-B cable, UL type AWM 2527 or equivalent. (min 24 AWG VBUS/GND, min 28
AWG D+/D-)
3 meters max.
Digital I/O transfer rates
Digital I/O transfer rate
(software paced)
Table 6. Digital I/O transfer rate specifications
System dependent, 33 to 1000 port reads/writes or single bit reads/writes per second typ.
4-2
USB-SSR24 User's Guide
Mechanical
Card dimensions without modules
Enclosure dimensions
Table 7. Mechanical specifications
431.8 mm (L) x 121.9 mm (W) x 22.5 mm (H)
17.0" (L) x 4.8" (W) x 0.885" (H)
482.6 mm (L) x 125.7 mm (W) x 58.9 mm (H)
19.00" (L) x 4.95" (W)x 2.32" (H)
Environmental
Operating temperature range
Storage temperature range
Humidity
Main connector
Table 8. Environmental specifications
0 to 70 °C
-40 to 85 °C
0 to 90% non-condensing
Connector type
Wire gauge range
Table 9. Main connector specifications
Screw terminal
12-22 AWG
Specifications
4-3
USB-SSR24 User's Guide
5+
6+
7+
8+
1+
2+
3+
4+
Screw terminal pin out
Table 10. Screw terminal pin out
Module 1+
Module 2+
Module 3+
Module 4+
Module 5+
Module 6+
Module 7+
Module 8+
Specifications
4-4
Declaration of Conformity
Manufacturer:
Address:
Measurement Computing Corporation
10 Commerce Way
Norton, MA 02766
USA
Category: Electrical equipment for measurement, control and laboratory use.
Measurement Computing Corporation declares under sole responsibility that the product
USB-SSR24
to which this declaration relates is in conformity with the relevant provisions of the following standards or other documents:
EU EMC Directive 89/336/EEC: Electromagnetic Compatibility, EN 61326 (1997) Amendment 1 (1998)
Emissions: Group 1, Class A
EN 55011 (1990)/CISPR 11: Radiated and Conducted emissions.
Immunity: EN61326, Annex A
IEC 1000-4-2 (1995): Electrostatic Discharge immunity, Criteria C.
IEC 1000-4-3 (1995): Radiated Electromagnetic Field immunity Criteria C.
IEC 1000-4-4 (1995): Electric Fast Transient Burst immunity Criteria A.
IEC 1000-4-5 (1995): Surge immunity Criteria C.
IEC 1000-4-6 (1996): Radio Frequency Common Mode immunity Criteria A.
IEC 1000-4-8 (1994): Magnetic Field immunity Criteria A.
IEC 1000-4-11 (1994): Voltage Dip and Interrupt immunity Criteria A.
Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in
June, 2005. Test records are outlined in Chomerics Test Report #EMI4221.05.
We hereby declare that the equipment specified conforms to the above Directives and Standards.
Carl Haapaoja, Director of Quality Assurance
Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766
(508) 946-5100
Fax: (508) 946-9500
E-mail: [email protected]
www.mccdaq.com
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