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Fast RS485/RS422 to RS485/RS422 auto TX-enable (or fixed enable)
interface converter for 4-wire and/or 2-wire, communications, in point-to-point
or multi-drop communications networks, at distances up to 4000 ft. and data
rates up to 115.2Kbps.
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The unit can be used as a 4-wire to 4-wire repeater, a 2-wire to
2-wire repeater, or as a converting 2-wire to 4-wire repeater.
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Galvanic (Opto/Xformer) Isolation helps eliminate noise, and protects
equipment form destructive transients found in industrial applications.
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This unit is very flexible and can be used as a versatile
"building block" to extend both the distance and/or the number of RS485/RS422
units on a network.
General Description:
The DIACR44 is a very flexible converter/repeater that can be used in 2-wire
and/or 4-wire applications. The unit features Dual Isolation (transformer and
optical), a wide power supply range (9 to 35VDC), edge mounted LED indicators,
removable screw terminal strips, on-board transient protection, jumper selection
for bias, termination, and operating modes. The DIACR44 can be configured to
solve many communications problems both as a repeater and as a converter.
The DIACR44 is designed as a robust converter/repeater for industrial applications
and other applications (both indoor and outdoor) where galvanic isolation is
important. This unit provides superior characteristics/features to solve a wide
variety of communications problems. Can be used for point to point, or 4-wire
RS422 (or RS485) to multi-drop 2-wire systems.
Need something special? Please contact us. We have additional isolated and non-isolated converters, repeaters, and repeater hubs. Units are generally stock to 2-3 business days for shipment. We design and manufacturer our entire product line, and offer technical support for our units, and can offer system recommendations for your application. Please give us a call: 513-874-4796
Related Files:
Physical Properties and Features:
| RS422: |
6-wire removable screw terminal
interface (RX/TX+, RX/TX-, TX+, TX-, and 2-Commons) |
| RS485: |
3-wire removable screw terminal
interface (RX/TX+, RX/TX-, Common) |
| Power: |
Removable 2-wire screw terminal
interface with full wave bridge input, for 9-35VDC (12-24VAC) operation,
typical power is under 1.0 Watt |
| LEDs: |
Power(YEL), TX-A(RED), RX-A(GRN),
TX-B(RED), and RX-B(GRN) |
| RS422 Bias: |
620 Ohm pull-up and pull-down (on
TX only, jumper selectable) |
| RS485 Bias: |
620 Ohm pull-up and pull-down (jumper
selectable) |
| Termination: |
120 Ohm (jumper selectable in 4
places) |
| Special: |
Jumper selection for flexible operating
modes, LED indicators |
| Protection: |
P6KE6.8A Transient Voltage
Suppressors inside 1N4004 diode bridge on data lines |
Specifications:
| Distance: |
RS422/RS485 up to 4000 ft. (1250 meters) on each side of the
interface |
| Operation: |
4-wire full-duplex (RS422/RS485) to 2-wire half-duplex RS485
factory default setting (also used as 2/4-wire to 2/4-wire repeater). |
| Format: |
Asynchronous data with any combination of bits, parity, stop |
| Speed: |
Up to 115.2Kbps+ (MAX489 slew rate limited drivers) |
| Temperarure: |
0-65C (32-150F) ambient |
| Humidity: |
10-90% non-condensing |
| Voltage: |
9-35VDC, (12-24VAC) |
| Power: |
Under 1.0 Watt (typical) + external load |
| Size: |
4.50" X 3.50" X 0.9" (PC Board), with connectors: 5.00" X
4.00" |
| Mounting: |
4-Places 4.00" X 3.00" (built-in standoffs for #6 hardware) |
Options and Ordering Information:
| DIACR44: |
$189.00 ea. (Circuit board only) |
| Enclosure: |
$10.00 ea. (Large) |
| Cable: |
None - screw terminal connections only |
| Supply: |
$8.50 ea. (12VDC @ 200/300 mA wall power supply). |
*DIACR44 with all options: DIACR44-BPS @ $207.50 ea.
(Qty. 1-9) |
Need a different configuration or more information? Give Ron a Call at 513-874-4796 or 513-638-0228(Cell)
Webstore: DIACR44
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