Relay Actuator and Isolated D/I Card  

Introduction

The PCL-725 Relay Actuator and Isolated D/I Card provides eight electro-mechanical SPDT relays and eight opto-isolated digital inputs on a half-size card.

Its eight on-board SPDT relays are ideal for applications such as device ON/OFF control or low power switching. A red LED next to each relay signals its ON/OFF status for easy monitoring.

The PCL-725's eight opto-isolated D/I channels are ideal for digital input in noisy environment or with floating potentials.

You can configure each input channel individually by setting jumpers for either isolated or non-isolated input. An on-board DB-37 connector provides access to all input and output channels.

Applications

• Digital signal and contact status monitoring
• Industrial on/off control
• Signal switching
• External relay driving

Features

• Eight relay outputs
• Eight opto-isolated digital inputs
• LED relay status indicators
• Isolated or non-isolated digital inputs
• Male DB-37 matching connector included

Isolated digital input

• Opto-isolator: 4N35
• Input channels: 8
• Input voltage: 5 V to 24 V
• Input resistance: 560 ohms / 1 W
• Input buffers: voltage comparators
• Threshold voltage: 1.5 VDC
• Breakdown voltage: 300 Vdc

Relay output

• Relay type: single-pole double-throw (SPDT, Form C)
• Output type: CH0 to CH3 with Normally Open and Normally Closed, CH4 to CH7 with Normally Open only
• Contact rating: 120 V, 0.5 A (AC) or 30 V, 1 A (DC)
• Breakdown voltage: 300 V AC/DC minimum
• Relay on time: 5 msec typical
• Relay off time: 5 msec typical
• Total switching time: 10 msec typical
• Insulation resistance: 100 M ohms minimum
• Life expectancy: > 500,000 operations at AC: 110 V/0.3 A, DC: 24 V/1.25 A
• Relay driver: + 12 V @ 33 mA for each relay

General

• Dimensions: 5.75" x 3.75" (147 mmx 95 mm)
• I/O port address: Two consecutive bytes from hex 200 to 3F8
• Power consumption: +5V @ <0.2A; +12 V @ 33 mA for each relay, <0.27 A if all eight relays are energized

PCL-725

Relay Actuator and Isolated D/I Card, user's manual and one DB-37 male connector (P/N PCL-10437-0