CB-534 Quick Start Guide
The Brainboxes CB-534 is an industrial isolated RS232 booster from the Convertor Buffer range. It provides signal boosting and optical isolation for RS232 serial connections, with integral DIN rail mounting and dual redundant power inputs.
Overview
The CB-534 features:
- Port 1 — RS232 serial port
- Port 2 — RS232 serial port
- LED Status Indication — activity and status LEDs
- Integral snap-on DIN rail mount — for easy installation in control cabinets
- +5VDC to +30VDC Power supply inputs — wide-range DC input via removable terminal block
- Ventilation — passive cooling
- Functional Earth contact to DIN rail — for EMC compliance
Pin Outs and Ports
Terminal Block Pin Outs
The CB-534 uses a removable terminal block for serial and power connections.
Yellow: Port 1 / Grey: Port 2
| Pin | RS232 Signal |
|---|---|
| Pin 1 | SIG GND |
| Pin 2 | CTS |
| Pin 3 | RxD |
| Pin 4 | RTS |
| Pin 5 | TxD |
Black: +5V to +30V DC Power Input
| Pin | Function |
|---|---|
| Power | Power input |
| -V | Negative supply |
| +VA | Positive supply A |
| +VB | Positive supply B |
| -V | Negative supply |
| Func GND | Functional ground |
Port Settings
| Parameter | Specification |
|---|---|
| Baud Rate | 120,000 max |
| Output signal swing | Typ. +/- 11V into RS-232 compliant load |
| Signals supported | TXD, RXD, RTS, CTS |
Power Connection
Connect a power supply providing a minimum of 1.1 Watts with an output voltage between +5VDC and +30VDC to the removable black terminal block. The optional PW-600 and PW-650 power supplies enable the device to be plugged easily into a standard power socket or powered via USB.
Using One Power Supply
Connect the positive terminal of the power supply to either +VA or +VB pin and the negative to one of the -V pins.
Using Two Separate Power Supplies
Connect one to +VA and -V and the other to +VB and -V. The higher voltage of the two power supplies is selected by the device and in the event of a failure the other supply automatically takes over to keep the device running.