User`s manual

8
Pin 2:
The relay will close when
input power fails.
Pin 3:
The relay will become open
when input power fails.
Pin 4:
Common for pins 2, 3, and 5.
Pin 5:
The relay will close when the
battery inside the UPS has
less than about 3 minutes
(CP500: 1.5 minutes) of
backup time left.
Pin 6:
User may send a high level
signal (+5V ~ + 12V) for
over 500 ms to turn off the
UPS. But it can only
activate when input power
fails.
PIN 7:
Common for pin 6.
NOTE:
1. Relay rating +24V 0.5A
2. Pin 7 should be connected to ground only.
B. RS232 COMMUNICATION PORT INTRODUCTION (FOR CP3K/2 ONLY)
INTRODUCTION:
The RS232 communication port provides the following features:
1. Monitor charger status.
2. Monitor battery status and condition.
3. Monitor inverter status.
4. Monitor UPS status.
5. Monitor the utility status.
6. Provide the power switch function for computer to turn on and off the utility to the
computer on schedule for power saving.
Computer will control information exchange by a query followed by <cr>. The UPS will
respond with information followed by a <cr> or action.
UPS data will be provided at 2400 baud rate and consist of 8 data bits, 1 stop bit, and no
parity bit. All the information is provided in ASCII format.