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PRESYS
| Instruments
1.2 - Order Code Number
Order Code
DCY - 2050/ 2051
Output 1 (For Control only)
0 - Not used
1 - 4-20 mA
2 - 1-5 Vdc
3 - 0-10 Vdc
4 - SPST Relay
5 - Open collector voltage
6 - Solid-state relay
Output 2 (Control or alarm)
Same code as for output 1
Output 3 (Alarm or control 1 auxiliary " cooling")
0 - Not used
1 - SPDT Relay
2 - Open collector voltage
3 - Solid-state relay
Output 4 (Alarm or control 2 auxiliary "cooling")
Same coding as for output 3
Power Supply
1 - 90 to 240 Vac
2 - 24 Vdc
Communication
0 - Not used
1 - RS232
2 - RS485
3 - RS422
Degree of Protection of Enclosure
0 - General purpose, sheltered place
1 - Front, drip proof
2 - Weather proof
Note - The spans and input types, control algorithms, the indication, the use of relays as
alarms and the alarm points are, among others, items which the user may program
through the front keys (if desired, specify such information so the whole programming
may be previously prepared by Presys).
Note: Any other desired software or hardware characteristics, may be available upon
request.
Code Example:
1) DCY - 2051 - 1 - 4 - 1 - 1 - 1 - 0 - 0
This code defines a DCY - 2051 Controller with output 1 to 4 at 20mA, output 2
with SPST relay , outputs 3 and 4 with SPDT relay . Power supply in the range of 90 to
240 Vac, does not use communication and is intended for use in a sheltered place. The
placing of such optional modules may offer a practical application for channel 1 heating-
cooling control (output 1-heating and output 3-cooling) and ON-OFF control for channel
2 (output 2). Output 4 can be a high, low or a deviation alarm output to channel 1 or
channel 2.
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DCY-2050 and DCY-2051
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Introduction
Page 3
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