UPS Communications Cable Smart Signalling AP940-0625A or AP940-1525

Скомпилировано на основании
http://www.apcmedia.com/salestools/MPAO-9E5RB5/MPAO-9E5RB5_R1_EN.pdf

UPS Communications Cable Smart Signalling 6'/2m - DB9 to RJ45
AP940-0625A или AP940-1525

RJ45 10pin Signals Available on Electrical Interface

Можно использовать RJ45 8pin со сдвигом номеров контактов

Pin	Signal	Direction	Description
1	+24V	Output	Switched 24 Volt DC output, jumper required to enable Not supported by SURTD
2	Power Fail	Output Type 1	Positive voltage indicates an AC Power Failure. RS-232 level output
3	Shutdown Imminent	Output Type 2	Stops sinking current when the output of the UPS is scheduled to turn off
4	Chassis Ground	Output	Used for drain wire termination in shielded cables
5	+24V Enable	Input	Used to enable the +24V output at pin 1. Short pin 5 to pin 7 to enable Pin 1 +24V output. Not supported by SURTD
6	-	-	-
7	Signal GND	Output	Signal ground for all inputs and outputs
8	Inverter Shutdown	Input Type 1	Application of positive voltage for >= 5 seconds starts a delayed shut down of the UPS during a power failure. RS-232 level input
9	UPS Turn Off	Input Type 2	Application of positive voltage for >= 0.25 seconds turns off the UPS immediately. Not supported by SURTD
10	UPS Turn On	Input Type 2	Application of positive voltage for >= 0.25 seconds when AC power is OK starts a (delayed) turns on of the UPS. Not supported by SURTD

Electrical Signal Communications

Standard Features

All Smart-UPS covered by this document contain a similar communications interface.

This interface offers one connector, an RJ-45 serial connector. The RJ-45 serial connector provides the following physical port on the back of the UPS.

This interface is designed to connect to a computer’s serial port, therefore one should consider the power available to be driven through an NPN transistor and have a pull down voltage of 0.5V (min) with a maximum of 20mA. 

Output Type 1 Characteristics

This output will have a voltage of 5V when active, and voltage of -5V when inactive. It is intended to be connected to an RS-232 device, and can drive a non-inductive impedance of ≥ 3KOhm. There is a tolerance of the voltage of ±10%.

Output Type 2 Characteristics 
This is an Open Collector output, and will sink current when active. It should be connected to a supply voltage between 2.4V and 25V with appropriate non-inductive impedance to limit the current to <5mA. The open collector output voltage may be as high as 1.2V when sinking current up to 5mA.

Input Type 1 Characteristics

The input circuit is designed to be active when a voltage of between 2.4V and 25V is applied. The signal is inactive when the input is < 0.6V or left unconnected. This pin is intended to interface with RS-232 drivers. Resistance to ground is approximately 3KOhms. The maximum voltage that can be applied to this pin is +/-25V.

Input Type 2 Characteristics 

The input circuit is designed to be active when a voltage of between 4.8V and 25V is applied. The signal is inactive when the input is < 0.6V or left unconnected. This pin is intended to interface with RS-232 drivers. Resistance to ground is approximately 100KOhms. The maximum voltage that can be applied to this pin is +/-25V. 

Simple Signal Cable (AP940-0625) or (AP940-1525)

This cable is designed to interface a Smart-UPS to a computer’s serial port. It provides 3 signals to the serial port, Power Failure, Shutdown Imminent, and the Shutdown Command pin. 

RJ45 10pin Signals for RS232

Pin	Signal	Direction	Description
1	-	-	-
2	UPS TX	Output Type 1	RS-232 output from the UPS
3	-	-	-
4	Chassis Ground	Output	Used for drain wire termination in shielded cables
5	-	-	-
6	-	-	-
7	Signal GND	Output	Signal ground for all inputs and outputs
8	UPS RX	Input Type 1	RS-232 input to the UPS
9	-	-	-
10	-	-	-

DB9 9pin Signals for RS232

Pin	Signal	Direction	Description
2	UPS TX	Output Type 1	RS-232 output from the UPS
3	UPS RX	Input Type 1	RS-232 input to the UPS
5	Signal GND	Output	Signal ground for all inputs and outputs

pins 1, 4 (DCD, DTR) shorted;
pins 7, 8 (RTS, CTS) shorted.