User manual

Manual WM-IIRO-8

Isolated Inputs

• Number: Eight

• Type: Non-polarized, optically isolated from each other and

from the computer. (CMOS compatible)

• Logic Input Low: -0.5 V to 0.8 V

• Logic Input High: +3.0 V to +33.0 V

• Isolation: 60V channel-to-ground or channel-to-channel

• Input Resistance: 1.8K ohms in series with two diodes and an LED.

• Change of State Detection: Change-of-state flags can be set on either the rising or

falling edge of any enabled input bit and can be re ad via

the serial port.

Relay Outputs

• Number: Eight.

• Contact Form: SPDT ( form C )

• Contact Type: Single Crossbar

• Contact Material: Silver + Gold-clad

• Rated Load: 0.5 A at 125 VAC; 1 A at 24 VDC

• Max. Switching Current: 1 A

• Max. Switching Voltage: 125 VAC; 60 VDC

• Max. Switching Capacity: 62.5 VA; 30 W

• Contact Resistance: 100 mS max.

• Operate Time: 5 ms

• Release Time: 5 ms

• Contact Life (mechanical): 5 million operations

Environmental

• Operating Temperature Range: 0 °C. to 65 °C .

• Temperature De-rating: Based on the power applied, maximum operating

temperature may have to be de-rated because internal

power regulators dissipate some heat.

For example, when 7.5VDC is applied, the temperature rise inside the enclosure is 7.3 °C. above the

ambient temperature.

Maximum operating temperature can be determined according to the following equation:

I(TJ = 100)

< 19.6 - T

/6.83

Where T

is the ambient temperature in °C. and V

I(TJ = 100)

is the voltage at which the integral voltage

regulator junction temperature will rise to a tem perature of 100 °C.

(Note: The junction temperature is rated to 120 °C. maximum.)