PCI-1760 Relay Actuator and Isolated D/I Card
PCI-1760
Introduction
The PCI-1760 relay actuator and isolated D/I card is a PC
add-on card for the PCI bus. It provides 8 opto-isolated
digital inputs with isolation protection of 2500 VDC for
collecting digital inputs in noisy environments, 8 relay
actuators for serving as ON/OFF control devices or small
power switches, and 2 isolated PWM (Pulse Width
Modulation) outputs for userís specific applications.
For easy monitoring, each relay is equipped with one red
LED to show its ON/OFF status. Each isolated input
supports both dry contact and wet contact so that it can
easily interface with other devices when no voltage is
present in the external circuit.
Digital Filter Eliminates Unexpected Input Noise
To eliminate unexpected signals or noise from the card
circuitry, each digital input channel has a programmable
digital filter. When the digital filter is enabled, the state of
the corresponding input channel will not update until one
high/low signal has lasted for a period which is set by the
user.
Interrupt Function Ensures Faster System Response
The PCI-1760 provides a ìPattern Matchî interruption
function for the digital input channels. The PCI-1760
monitors the state of some or all of the input channels and
then compares with a pre-set pattern. The PCI-1760
generates an interrupt signal to the system when the inputs
match the pattern.
The ìChange of Stateî interrupt function monitors the state
of the input channels. When any input changes its state,
the PCI-1760 interrupts the system to handle this event.
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Relay Actuator and Isolated D/I Card
These interrupt functions release the CPU from the burden
of polling all the I/O points, enabling a PC to handle more I/
O points with higher performance.
Up event counter for Each DI
Each isolated digital input channel is connected to a 16-bit
UP event counter. A counter will increment by 1 whenever
it reads either a rising- edge (low to high) or a falling-edge
(high to low) input signal with the maximum frequency of
500 Hz. When the counter overflows or reaches a pre-set
value (chosen by software) , it generates an interrupt signal
to the PC.
Applications
• Digital signal and contact status monitoring
• Industrial On/Off control
• Signal switching
• External relay driving
Features
• 8 opto-isolated digital input channels
• 8 relay actuator output channels
• 2 opto-isolated PWM outputs
• LED indicators to show activated relays
• Jumper selectable dry contact/wet contact input signals
• Up event counters for DI
• Programmable digital filter function for DI
• Pattern Match interrupt function for DI
• Change of State interrupt function for DI
Relay Actuator and
Isolated D/I Card
Block Diagram
8 Opto-isolated
Inputs
8 Relay Outputs
2 Opto-isolated
PWM Outputs
2500 VDC
Isolation
Address Bus
Control Bus
Embedded monitor
system
Data Bus
Voltage
Monitor
and
WDT
PCI Bus
PCI Bus Controller
PCI BUS
Specifications
Isolated Digital Input
• Channels: 8
• Opto-isolator: PC354
• Input voltage: 5 ~ 12 V
High: > 4.5 V
Low: < 1.0 V
Uncertain: 1.0V ≤ Vin ≤ 4.5V
• Input resistance: 1K Ω 1/4 W
• Isolation voltage: 2500 VDC
• Digital Filter:
Minimum effective High input period ≥ [(2 ~ 65535) x 5
ms] + 5 ms
Minimum effective Low input period ≥ [(2 ~ 65535) x 5
ms] + 5 ms
• 16-bit UP counter:
Maximum effective input frequency: 500Hz
Minimum High period ≥ 1 ms
Minimum Low period ≥ 1 ms
Relay Output
• Channels: 8
• Relay type: single-pole double-throw (SPDT, Form C)
• Output type:
CH0 and CH1: NC and NO outputs
CH2 ~ CH7: NC or NO outputs (selected by jumper)
• Rating contact load: 120 VAC @ 0.5 A or 30 VDC @ 1 A
• Contact resistance: less than 100 mΩ initially
• Dielectric strength:
Coil to contacts (deenergized): 1500 Vrms (1 minute)
Between open contacts (deenergized & energized):
1000 Vrms (1 minute)
• Life expectancy:
200,000 operations @ 0.5 A 120 VAC
500,000 operations @ 1.0 A 30 VDC
• Operating & Releasing time:
Operating time: 5 ms max.
Releasing time: 5 ms max.
Isolated PWM output
• Channel: 2
• Isolation voltage: 2500 VDC
• Scaling resolution: 16 bits (100 µs for each step)
High period = [(1 ~ 65535) x 100 µs ] + 50 µs (max.)
Low period = [(1 ~ 65535) x 100 µs ] + 50 µs (max.)
• Output level: High: (5 ±0.5) V
Low: < 0.8 V
General
• Power consumption: +5V @ 450 mA (typical), 850 mA (max.)
• Operating temperature: 0 ~ +60°C (32 ~ 140°F) (refer to
IEC 68 - 2 - 1, 2)
• Storage temperature: -20 ~ +70°C (-4 ~ 158°F)
• Operating humidity: 5 ~ 95% RH non-condensing(refer
to IEC 68-2-3)
Physical
• Connector: One 37-pin D-type connector
• Dimensions: 175 x 100 mm (6.9" x 3.9")
Pin Assignments
IGND
1
IDI7-
2
IDI6-
3
IDI5-
IDI7+
21
IDI6+
22
IDI5+
23
IDI4+
24
IDI3+
25
IDI2+
26
IDI1+
27
IDI0+
28
PWM2
29
R5_OUT
30
R4_OUT
31
R3_OUT
4
IDI4-
5
IDI3-
6
IDI2-
7
IDI1-
20
8
IDI0-
9
PWM1
10
R8_OUT
11
R7_OUT
12
R6_OUT
13
R8_COM
14
R7_COM
15
R6_COM
16
R5_COM
17
R4_COM
18
R3_COM
19
32
R2_NO
33
R2_NC
34
R2_COM
35
R1_NO
36
R1_NC
37
R1_COM
Ordering Information
q PCI-1760: Relay Actuator and Isolated D/I Card for the
PCI Bus, user's manual and driver CD-ROM
q PCL-10137: 37-pin D-type cable, 1m
q ADAM-3937: DB-37 wiring terminal for DIN-rail mounting
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