Measurement Computing

(508) 946-5100

1

info@mccdaq.com

mccdaq.com

USB DIO High Voltage and Relay

Measurement Computing

(508) 946-5100

1

info@mccdaq.com

mccdaq.com

USB DIO High Voltage and Relay

USB-PDISO8, USB-ERB, and USB-SSR Series

Relay Contacts and

Connectors

USB-PDISO8/USB-ERB Series Only

The USB-PDISO8 and USB-ERB Series

devices provide screw terminal con-

nections to the relay contacts. The

USB-PDISO8/40 provides relay connec-

tions through a 40 pin connector.

Each relay has a normally closed (NC),

common (C), and normally open (NO)

contact. Relays on all devices are con-

trolled by digital I/O lines.

SSR Digital I/O Control

Modules

USB-SSR Series Only

The USB-SSR08 provides mounting loca-

tions for eight SSR digital I/O modules,

and the USB-SSR24 provides mounting

locations for 24 SSR modules.

SSR digital I/O modules are relay con-

trol modules that provide 4000 Vrms of

optical isolation. Digital input modules

sense AC/DC voltages from field devices

and convert them to digital TTL signals.

Digital output modules use TTL signals to

switch and control AC/DC loads.

A wide selection of SSR digital I/O

modules are available to switch or sense a

large range of AC or DC voltages.

The SSR modules use a standard color

scheme to help quickly identify the mod-

ule type installed.

Compatible SSR modules are available sepa-

rately (refer to SSR Digital I/O Modules on

page 10).

Features

• USB-PDISO8 Series

− 8 Form C relays

− 8 isolated AC or DC inputs

• USB-ERB Series

− 8 or 24 Form C single-

pole double-throw (SPDT)

electromechanical relays.

• USB-SSR Series

− 8 or 24 input or output

channels to control and

monitor solid state relays.

• Screw terminal or header

connectors

• Heavy-duty chassis with

integrated mounting slots

• Includes external power supply

(required for all devices)

Supported Operating Systems

• Windows

11/10/8/7/Vista®/XP

32/64-bit

• Linux®

USB-PDISO8 Series

USB-ERB Series

USB-SSR Series

Overview

Measurement Computing DIO high voltage and relay USB product offerings include

the USB-PDISO8 Series, USB-ERB Series, and USB-SSR Series.

The USB-PDISO8 Series offers eight isolated AC or DC inputs and eight electro-

mechanical relays in a single digital I/O system. The USB-ERB Series enables a PC

or laptop to control eight to 24 electromechanical relays.

The USB-SSR Series can monitor and control eight to 24 standard size solid state

relay (SSR) I/O modules (relays sold separately).

All devices in these series come in a heavy-duty metal enclosure with integrated

mounting slots, which ensures that the devices are rugged enough for any DAQ

application.

USB-PDISO8 Series, USB-ERB Series, and USB-SSR Series Selection Chart

Model

Relay Channels

Contact Rating

Daisy Chain Support*

Signal I/O Connector

USB-PDISO8

8 Form C (SPDT)

6 amps at 240 VAC/28 VDC

✔

40-pin screw terminal

USB-PDISO8/40

8 Form C (SPDT)

6 amps at 240 VAC/28 VDC

✔

40-pin header connector

USB-ERB08

8 Form C (SPDT)

6 amps at 240 VAC/28 VDC

✔

24-pin screw terminal

USB-ERB24

24 Form C (SPDT)

6 amps at 240 VAC/28 VDC

✔

72-pin screw terminal

USB-SSR08

8 Solid State Relay Modules

–

✔

16-pin screw terminal

USB-SSR24

24 Solid State Relay Modules

–

✔

48-pin screw terminal

* Use standard/included USB cable for communications daisy chain; user-supplied custom cable required for power daisy chain