ADLINK PCI-7260 - Manual (Page 11)

Introduction 1
1 Introduction
The PCI-7260 is a high-power non-latching relay actuator and iso-
lated digital input card for industrial automation and machine con-
trol.
This PCI-7260 provides 8 high-power non-latching relay outputs
and 8 opto-isolated digital inputs. The relay outputs are SPST-
NO+SPST-NC (1 Form A 1 Form B) type and each channel is
capable to switch up to 5A current at 250VAC or 30VDC. The sta-
tus of each relay output is indicated by either an on-board LED or
an external relay status output channel. When the non-latching
relay is in CLOSE condition, the corresponding on-board LED will
be turn ON and the corresponding relay status output will be set
as HIGH.
All of the digital input channels are identical non-polarity opto-iso-
lated. Each of them is jumper selectable to use a AC filter or non-
AC filter. All channels are isolated and therefore are suitable for
collecting digital inputs in noisy environments. The function of
“Change-of-State” (COS) interrupt is provided, which will generate
an interrupt to the host system when any of these digital inputs
changes its state.
Some advanced features for industrial applications are designed
for the PCI-7260. The emergent shutdown input (EMG_SHDN) on
the front panel lets users get back to a safety state set by a DIP
switch regardless the system condition. The initial output status
when powering on can be also set by a DIP switch. And the built-in
watchdog timer guarantees you that all the relays go back to the
safety state when your compute halts.
The I/O connectors are also considered. The 18-pin pluggable
connector for relay outputs and emergency shutdown on the front
panel allows easy wiring and high current carrying. Two extra 20-
pin ribbon connectors provide capacities of isolated digital inputs
and relay status outputs.