- Uninterruptible Power Supply:
- UPSB125 (S/N: SEP1-UP)
- UPSB130 (S/N: XTC1-UP)
Introduction
This Special Instruction provides information about the installation of the RS232/ASCII communication card for uninterruptible power supplies (UPS).
The RS232/ASCII communication card enables the transmission of the data for the operating status of the UPS. The communication card enables the transmission of the data to a computer.
The RS232/ASCII communication card is equipped with two communication channels that can be used simultaneously but completely independently from one another. The RS232/ASCII communication card complies with the Microsoft Plug and Play standard for PC peripheral identification.
Components
The following components are used.
- RS232/ASCII communication card
- DB9 to DB9 serial RS232 communication cable
- Two screws that are used to attach the RS232/ASCII communication card to the UPS
Note: The communication cable is compatible with Microsoft Plug and Play detection.
Note: If the communication card is stored before use, then leave the communication card in the original packaging. Place the communication card in a dry place. The temperature of the storage area must be kept between −40° C (−40° F) to 70° C (158° F).
Configuration
The communication card must be properly configured for the specific application before the card is installed. The parameters must be configured for the operating mode of channel J3 and channel J4.
Illustration 1 | g02008435 |
(1) JMP1 and JMP2 (2) JMP3 (3) Reset Button (4) JMP4 and JMP5 (5) JMP6 |
Parameters That Can Be Configured
- Pin 2 of the DB9 connector can be configured to be either the reception (Rx) signal or the transmission (Tx) signal. Pin 3 of the DB9 connector can be configured to be either the reception (Rx) signal or the transmission (Tx) signal. Refer to the information that is in the caption for Illustration 6.
Note: One of the pins in the connector must be designated as the reception (Rx) signal and the other pin must be designated as the transmission (Tx) signal.
- The communication card can be configured to recognize either "information operation on mains 2" or Microsoft Plug and Play detection.
Configure the J3 Channel
Use "JMP1" and "JMP2" (1) in order to select the desired pins for Rx and Tx on the DB9 connector. Refer to Illustration 2.
Illustration 2 | g02008456 |
Pin Configuration of Rx and Tx for the J3 Channel |
Use "JMP3" (2) in order to set the configuration for operation on "Mains 2" or Microsoft Plug and Play detection. Refer to Illustration 3.
Note: This instruction assumes that the UPS is equipped with dual high voltage inputs. One input is referred to as "Mains 1" and the other input is referred to as "Mains 2". Power from a utility provider and power from a generator are two examples of inputs.
Illustration 3 | g02008637 |
Configuration of the J3 Channel for Operation on "Mains 2" or Microsoft Plug and Play Detection |
Configure the J4 Channel
Use "JMP4" and "JMP5" (4) in order to configure the selections for Rx and Tx for the DB9 connector. Refer to Illustration 4.
Use "JMP6" (5) in order to set the configuration for operation on "Mains 2" or Microsoft Plug and Play detection. Refer to Illustration 5.
Illustration 4 | g02008639 |
Configuration of the J4 Channel |
Illustration 5 | g02008641 |
Configuration of the J4 Channel for Operation on "Mains 2" or Microsoft Plug and Play Detection |
Parameters That Cannot Be Configured
The following list of parameters cannot be configured.
- 2400 baud rate
- Eight data bits
- One stop bit
- No parity bit
Note: The SA1 microswitches that are on the communication card are not used.
Installation
The UPS does not need to be powered down in order to install the RS232/ASCII communication card. The communication card is connected directly to the back of the rack that holds the PC cards. The back side of the rack is reserved for the transverse communication cards.
After the communication card has been installed, press the reset push button (3) in order to restart the communication card.
Operating Characteristics
The green led lamp, that is located on the on the communication card, will flash in order indicate the following operations.
- The led lamp will flash once every second during start-up.
- The led lamp will flash sporadically and more frequently during initialization.
- The led lamp will flash each time a measurement is modified or each time a status is modified during normal operation.
- The led lamp will flash every three seconds if no change takes place during normal operation.
- The led lamp will flash at the same rate as "data exchange" with a customer application.
DB9 Connections
Illustration 6 | g02008649 |
DB9 Connections (Pin 1) Ground (Pin 2) Rx or Tx (Pin 3) Rx or Tx (Pin 4) Normally Open Contact (Pin 5) Common (Pin 6) Normally Open Contact (Pin 7) Normally Open Contact (Pin 8) Normally Open Contact (Pin 9) No Function |
Note: Thirty volts is the maximum voltage (Vmax) that can be used in order to open the relay. 200 mA is the maximum current (Imax) that can be used.
A remote signal to stop can be transmitted on pin 3 of each DB9. A logic high of four volts to twenty volts, with a minimum duration of 100 ms, will cause a time-delayed stop of the UPS.
Note: The remote signal to stop is recognized only if the UPS is operating on battery. Remote stop is not available on all the UPS units.
Illustration 7 | g02008650 |
Configuration for the DB9 Connector that is Used for the J3 Channel. The Jumpers, JMP1 and JMP2, are Placed to the Right. Configuration for the DB9 Connector that is Used for the J4 Channel. The Jumpers, JMP4 and JMP5, are Placed to the Right. |
Illustration 8 | g02008654 |
Configuration for the DB9 Connector that is Used for the J3 Channel. The Jumpers, JMP1 and JMP2, are Placed to the Left. Configuration for the DB9 Connector that is Used for the J4 Channel. The Jumpers, JMP4 and JMP5, are Placed to the Left. |