modules provide a powerful way to add digital and analog I/O to a variety
of computers, controllers, and PLCs. Each SeaDAC model connects to an available
USB port and provides easy field wiring via removable terminal blocks. SeaDAC
modules are housed in a rugged, attractive plastic enclosure and include a highretention USB type B connector to prevent accidental disconnection. SeaDAC
modules are USB 1.1 compliant and USB 2.0 compatible.
SeaDAC modules are supported under Windows 98/ME/2000/XP/Vista. For easy
software integration, application programs or 3
SeaMAX
TM
library or industry standard Modbus protocol.
rd
party software can use the Sealevel
This manual covers the installation and operation of these SeaDAC products:
Sealevel SeaDAC modules are available in various I/O configurations, each designed
for maximum flexibility and easy field wiring. SeaDAC modules can be used with
industry standard Modbus RTU protocol or easily controlled from application
programs using the supplied SeaMAX software libraries, which includes the
diagnostic and configuration tool MaxSSD. Sealevel SeaDAC modules offer
powerful data acquisition solutions that are perfect for a wide range of applications
and environments with easy interfacing to computers, controllers, and PLCs.
Industry Segments
SeaDAC modules are perfect for a wide variety of applications and environments
including:
Process Control
Data Acquisition
Broadcast Automation
Security
Facility Management
Features
Models Offering Choice of:
o Optically Isolated Inputs
o Reed Relay Outputs
o Form C Relay Outputs
o Analog I/O – A/D & D/A
Status Indicator LEDs for Communication, Fault, and Status
High-Retention USB Type B Connector
Field Removable Terminal Block Connectors
Supports Industry Standard Modbus RTU Protocol
Wide Operating Temperature (0°C to +70°C)
Extended Temperature Range Available (-40°C to +85°C)
Attractive & Rugged Plastic Tabletop Enclosure
Compact Size – 9.2"(L) x 5.3"(W) x 1.7"(H)
All SeaDAC modules are shipped with the following items. If any of these items is
missing or damaged please contact Sealevel for a replacement.
SeaDAC Digital Interface Adapter
Item# CA179 – 6’ A to B USB Device Cable
Sealevel SeaMAX Software CD
Optional Items
Mounting Options
Cabling Options
NOTE:
The SeaDAC REL-16C (Item# 8225) includes a 5VDC @ 2.4A
wall-mount power supply (Item# TR101). External power is
required with this module due to the power requirements of the
sixteen Form C relays.
CA179 – 6’ A to B USB Device Cable (included with SeaDAC modules)
CA214 – 3Meter Type A to Type A USB Extension Cable
USB Hubs
HUB7i – Optically Isolated 7-Port USB Hub − AC powered 7-port USB hub, AC
adapter, and USB cable. Provides up to 5500VAC isolation and protects the host
computer from voltage spikes, power surges, and ground loops commonly found
in industrial environments.
HUB7 – High Speed USB 2.0 7-Port Hub
− AC powered 7-port USB hub, AC
adapter, and USB cable.
HUB4 – High Speed USB 2.0 4-Port Hub
SeaDAC models include a high-retention Type B USB connector that prevents
accidental disconnection of the USB cable. The orange, ruggedized connector
provides up to two times the removal resistance to the cable than standard USB
connectors.
Status LEDs are also included on the front of all SeaDAC devices to indicate the
following information:
Communicati on (Yellow) – Blinks when data is transmitted
Fault (Red) – Lights when there is a problem with the device
Status (Green) – Blinks when the device is enumerated by the USB port
Sealevel SeaDAC modules are powered by the USB host interface and require 5VDC
@ 500mA to be available on the USB port. Most computers and powered USB hubs
are capable of meeting this requirement, while passive USB hubs and some laptops
running on batteries may not. Check the product manual that shipped with your
system or hub if you are uncertain. You can also contact Sealevel technical support
for assistance.
The maximum power requirements for each SeaDAC device are shown below.
The SeaDAC REL-16C (Item# 8225) includes a 5VDC @ 2.4A
wall-mount power supply (Item# TR101). External power is
required with this module due to the power requirements of the
sixteen Form C relays.
SeaDAC 8221 modules provide 16 optically isolated inputs and 16 Reed relay
outputs. Inputs can range from 5-30VDC, while the Reed relays provide long life
switch closures that are well suited for low current applications. Inputs and outputs
are grouped into four-bit segments. Each group shares a common for easy wiring via
removable 3.5mm terminal blocks.
Inputs
Type: 16 non-polarized optically isolated inputs
Voltage Range: 5-30VDC
Isolation: 300V
Input Resistance: 6.2K Ohms in series
Response Time: 4 microseconds
8222 – 16 Optically Isolated Inputs/8 Form C Outputs
The SeaDAC 8222 provides 16 optically isolated inputs and 8 SPDT Form C relay
outputs. Inputs can range from 5-30VDC and provide 300V isolation to ground. Each
output offers normally open and normally closed contact connections via 3.5mm field
removable terminal blocks.
Inputs
Type: 16 non-polarized optically isolated inputs
Voltage Range: 5-30VDC
Isolation: 300V
Input Resistance: 6.2K Ohms in series
Response Time: 4 microseconds
Outputs
Type: 8 SPDT Form C relays
Power: DC 30W/ AC 60 VA
Contact Voltage: 60VDC max.
Contact Current: 2A max.
Operate Time: 2ms max.
Bounce Time: 7ms max.
Release Time: 1ms max.
SeaDAC 8223 modules provide 32 optically isolated inputs with 300V external
isolation and high channel-to-channel isolation. Ideal for low voltage monitoring
applications, connection to real world signals is made via convenient 3.5mm field
removable screw terminal connectors.
Inputs
Type: 32 non-polarized optically isolated inputs
Voltage Range: 5-30VDC
Isolation: 300V
Input Resistance: 6.2K Ohms in series
Response Time: 4 microseconds
The SeaDAC 8224 provides 32 SPST Form A dry-contact Reed relays. Reed relays
offer long life performance and fast response time. Convenient removable 3.5mm
screw terminal blocks compatible with 14-22 AWG wiring allow reliable connection
to real world I/O.
Control a variety of low voltage, low current devices with the SeaDAC 8225. The
module’s 16 channels of highly reliable SPDT Form C relay outputs are rated for up
to 60VDC @ 2A. Each output offers normally-open and normally-closed contact
connections via 3.5mm field removable terminal blocks.
Outputs
Type: 16 SPDT Form C relays
Power: DC 30W/ AC 60 VA
Contact Voltage: 60VDC max.
Contact Current: 2A max.
Operate Time: 2ms max.
Bounce Time: 7ms max.
Release Time: 1ms max.
Designed using the Maxim MAX197 successive approximation-type A/D chip, the
SeaDAC 8227 provides eight differential or 16 single-ended 12-bit inputs. The A/D
inputs can be individually configured for sensing 4-20mA current loop signals.
Additionally, the module provides two 12-bit D/A output channels, eight optically
isolated inputs, and eight open collector outputs, ideal for driving 24V devices
commonly found in industrial environments. Perfect for a variety of data
acquisition/control and test & measurement applications, the SeaDAC 8227 includes
removable screw terminals, which simplify field-wiring connections.