The 16 channels relay output board for pocket 16 DO provides relay output functions, which provides 16 Single Pole Single Throw (SPST) relay to drive 16 different output channels. Each relay channel can be used to control ON / OFF of external devices, to drive external high power relays, to activate alarms¡K.etc.

Features of 16 Channel Relay Output Board
*Support 16 relay output channels.
*Max contact rating for relay: 120 V AC/DC 1 amp.
*Attraction time for relay: 3 ms.
*Fall of time for relay: 2 ms.
*Isolation resistance for relay: 100M OHM
*Life expectancy for relay: 5 million operation at full load.
*The Normal Open (NO) and Common contacts (COM) of each relay is brought out to screw connector.
*LED indicates when corresponds channel is activated.

Hardware Connections


Hardware Configurations
Before you use the terminal board, you must be sure to connect or plug into the 8255 card.

The LED 17 in terminal board shows the power on status. When it turns to light, the board have the applied power to this board, otherwise when it does not light, there is no applied power.

Pin Assignment of TB1

Pin Assignment of TB2 (Relay Output)