Relay Card
AR-B2103
Features
Contact resistance:100m ohms max
Contact ratings:AC125V/1A or DC30V/3A (Resistive Load)
Operation time:8 msec max
Release time:8 msec max
Output status read back
16 LED indicator for each channel
Connector:37-pin D-type (ext. AR-B9007)
Isolation:2100VDC isolation acrosser open contacts
1400VDC isolation between coil and contacts
For IBM PC/XT/AT personal computers and compatible
Dimensions:175mm x 108mm
Specifications
General
Number of Outputs
Max Switching Power
Max Switching Voltage
Max Switching Current
Contact Rating
Contact Resistance
Operate Time
12 Form A (SPST) and 4 Form C (SPDT) relays
Resistive load - AC 250VA, DC 120W, Inductive load - AC 125VA, DC 60W
250VAC, 220VDC
4A
Resistive load - AC 125V, 1.0A or DC 30V, 3A, Inductive load - AC 125V, 0.6A or DC 30V, 2A
100 milli ohms maximum (Initial value)
8mS maximum at the rated voltage
Release Time
8mS maximum at the rated voltage
Bounce Time
8mS maximum
Isolation
Contact and coil - 1500Vrms, 2100VDC, Contact to contact - 1000Vrms, 1400VDC
Life Expectancy
Varistor Voltage
Varistor power
Active Indicators
I/O Address
100 million. (Ref. 10VDC, 10ma)
140Vrms, 180VDC
0.2W
16 LED
Base port switch selectable from 000H to 3FCH with increments of 4
+5VDC@100mA max. (All relays On), +12VDC@300mA max. (All relays On)
175mm x 108mm
Power Consumption
Dimensions
Applications
Control switching, Analog multiplexing, Motor starter control, Alarm control, Lighting control
The AR-B2103 occupies 4 consecutive addresses in the PC I/O space of which only two actually used. The base or
Registers
starting address is selected during the installation procedure.
The registers of the AR-B2103 are located as follows:
AddressOutput RegisteInrput Status
Base +0 Relay Port 1(write) Relay Port 1(read)
Base +1 Relay Port 2(write) Relay Port 2(read)
Base +2 Not Used
Base +3 Not Used
Not Used
Not Used
Note that all port are 8 bit (one byte) wide and require byte oriented write operations rather than work operations.
All relays in a port are updated simultaneously. Writing a low (0) to a relay within a port deactivates the relay.
Writing a high (1) to a relay activates it.
Registers
The registers of the AR-B2103 are located as follows:
BASE +
BASE +
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1
CH16 CH15 CH14 CH13 CH12 CH11 CH10 CH9
When the output is energized, the status LED indicator will light up to indicate an active input.
No driver is supplied with the AR-B2103 since the program is very simple and can be accomplished most efficiently
using direct I/O instructions, in whatever application language is used (i.e., Basic, C, Assembly, Pascal, etc.). For
example, assume that one wishes to turn on relay channel 7. Also assume the AR-B2103 board has been set to base
address 992(3E0 hex). To turn on relay channel 7, one simply writes 01000000 to base address 992. Likewise to turn
on channel 10, 12 and 14 one writes 42 decimal (00101010 binary or 2A hex) to I/O address 993(3 E1 hex).The
following example is the BASIC language but it can be easily been translated to other languages. Example:
Assume the AR-B2103 is installed at base address 992(3E0 hex).
Programming
To turn on the channel 1 and 10, write as follows:
1000BASE_PORT = &H3E0: REM Base I/O addresses
1010 OUT BASE_PORT, 1: REM Turns channel 1 ON
1020 OUT BASE_PORT+1,2: REM Turns channel 10 ON
To control the desired relays but make no effect to other relays, write as follows:
2000 BASE_PORT = &H3E0 : REM Base I/O addresses
2010 PORT1 = (INP (BASE_PORT) OR1): REM Read back port 1 status and set bit of channel 1
2000 OUT BASE_PORT, PORT 1: REM Turns channel 1 ON
2030 PORT2 = (INP (BASE_PORT,1) OR2): REM Read back port 2 status and set bit of channel 10
2040 OUT BASE_PORT+1, PORT2: REM Turns channel 10 ON
Ordering information:
Accessories
Model No.
Description
(1). Disk: Win31/95 Driver
AR-B2103
Relay Card
AR-B9007
37 pin Screw Terminal Board for AR-B2103 with
0.6m Round cable.
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