2524
www.sunnyrooproducts.com
RS-485 card
CN1 is for the function of the terminal resistor. Short Pin 1-2 to enable the
function and short Pin 2-3 to disable it.
CN2 is RS485 terminal definition
USB card
CN2 for USB.
Definition
Comply with USB version 1.0 & 1.5Mbps.
Comply with USB HID Version 1.0.
The Pin Assignments of the USB card:
True Relay Contact Board (DCE-B card)
The pin assignments of 10-Pin Terminal:
1 2 3 4 5 6 7 8
Pin 1: Voltage of utility is abnormal.
Pin 2: PV strings voltage is normal.
Pin 3: PV strings voltage is abnormal.
Pin 4: Frequency of utility is abnormal.
Pin 5: Anti-islanding.
Pin 6: Output current of inverter exceeds range.
Pin 7: Temperature of heat-sink is too high.
Pin 8: Common.
The capacity of each relay contact is 40Vdc/25mA.
Flexible signal output for N.C. (Normal close) or N.O. (Normal open) contact
by shorting Pin 1-2 or Pin 2-3 from of JP1-5.
TCP/ IP (Ethernet) cards
For installation, please refer
to the User’s Manual attached
with the card.
CN2
1 → Earth
2 → A/Data+
3 → B/Data-
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