CyberResearch® Digital I/O

UCERB 24

Chapter 4

Specifications

Typical for 25 °C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Output specifications

 

 

 

Table 4-1. Output specifications

 

 

 

Number of relays

24

Relay configuration

2 banks of 8 and 2 banks of 4

Contact configuration

24 Form C (SPDT) Normally Open, Normally Closed and Common available at screw

 

 

 

terminals

Contact rating

6 A @ 240 VAC or 28 VDC resistive

Contact resistance

100 milliohms max (initial value)

Operate time

10 milliseconds max

Release time

 

5 milliseconds max

Vibration

 

10 to 55 Hz (amplitude 1.5 mm)

Shock

 

10 G (11 milliseconds)

Dielectric isolation

300 VAC, 50/60 Hz (1 minute)

(between relay open

 

contact)

 

 

Dielectric isolation

500VAC, 50/60 Hz (1 minute)

(between PCB output

 

lines)

 

 

Life expectancy

10 million mechanical operations, min

Power on

 

S2 =

Energized. NO in contact with Common

state

 

pull-up

 

 

 

S2 =

Not energized. NC in contact to Common

 

 

pull-

 

 

 

down

 

Relay control logic

User-configurable per bank via switch S1 for invert or non-invert (default). Switch settings

polarity

 

for polarity can be read back via software through the USB bus. Switch settings do not

 

 

 

affect the power on condition. Non-invert mode, when "0" is written or read back via the

 

 

 

USB bus, relays are not energized. Invert mode, when "0" is written or read back via the

 

 

 

USB bus, relays are energized.

Pull-up / pull-down

User-configurable per bank via switch S2 for pull-down (default) or pull-up. Switch

 

 

 

Settings can be read back via software. Pull-down will put the relays in non-energized

 

 

 

mode on power up. Pull-up will put the relays in energized mode on power up.

CyberResearch, Inc.

19

25 Business Park Drive

P: (203) 483-8815; F: (203) 483-9024

Branford, CT USA

www.cyberresearch.com