Operations Manual USB Photo Relay Card
DECISION Computer International
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The mini USB 4 channels relay output / photo isolator input
card provides photo coupler digital input and relay output
channels. The photo isolator input part provides 4 photo
coupler digital input channels, which allows the input signals to
be completely floated and prevent the ground loop. The relay
output part provides 4 relays to drive 4 different output
channels. Each relay channel can be used to control ON/OFF
of external devices, to drive external power relays, to activate
alarms… etc.
The mini USB 4 channels relay output / photo isolator input
card provides Plug and Play (PnP) features, it is a
programmable I/O interface card for PC/486, Pentium, or
compatibles. The on board Cortex™-M0 core provides USB
2.0 full-speed functions running up to 50 MHz and features
64K bytes flash, 8K bytes embedded SRAM and 4 Kbytes
loader ROM for the ISP.
The features of mini USB 4 channels relay output /
photo isolator input card are:
USB2.0 with Plug and Play (PnP) features.
High speed Cortex™-M0 core.
Support USB ID selection to identify USB device.
Power supplied from external DC +5V/1A.
Support 4 photo couple input channels and 4 relay
output channels.
Allow the photo input signals to be completely floated
and prevent the ground loops.
Operations Manual USB Photo Relay Card
DECISION Computer International
2
8 LED correspond to 4 input and 4 output ports
activation status.
By using K10101D (DIP) / K10104D (SMT) photo
coupler chips.
For photo couple input channel, the isolation voltage is
5000V/1 minute, current transfer ratio is 300 to 600%,
collector-emitter voltage is 60V, emitter-collector
voltage is 6V, collector current is 50 mA, and
maximum load voltage is 30V.
Activation voltage of photo input:
When short jumpers (input range from 0 to 20V DC)
0 to 4.5V inactive
6 to 20V active
When open jumpers (input range from 0 to 30V DC)
0 to 16.5V inactive
18 to 30V active
By using KAQY212 H (DIP)/ KAQY212 HA (SMT)
4PIN 60V N.O TYPE SOLID STATE RELAY-
MOSFET output chips, the isolation test voltage is
5000VACrms, output breakdown voltage is ±60V,
continuous load current is ±400mA, output off-state
Leakage is 1μA, I/O capacitance is 6pf, on resistance is
2.5Ω, turn-on time is 1.5ms, and turn-off time is 1.5ms.
By using KAQY412 H (DIP)/ KAQY412 HA (SMT)
4PIN 60V N.C. TYPE SOLID STATE RELAY-
MOSFET output chips, the isolation test voltage is
5000VACrms, output breakdown voltage is ±60V,
continuous load current is ±200mA, output off-state
Leakage is 1μA, I/O capacitance is 6pf, on resistance is
5Ω, turn-on time is 1.5ms, and turn-off time is 1.5ms.
By using KAQW612 H (DIP)/ KAQW612 HA (SMT)
HA 8PIN 60V N.O.+N.C. TYPE SOLID STATE
RELAY-MOSFET output chips, the isolation test
voltage is 5000VACrms, output breakdown voltage is
