As part of your installation, you might need to include a Mercury LP1501 intelligent controller.
IMPORTANT: LP controllers include a Micro USB port. This connection is not
to be used if UL/ULC listed access control system compliance is required and is to
be maintained.
The following diagram demonstrates how to connect the controller.
| A | Reader connections | TB2: Reader 1 NOTE: The wire colors in the illustration refer to
"pigtail" HID readers; the information in parentheses refers to
"terminal block" HID readers.
|
| B | Reader connections (Wiegand only)a | TB3: Reader 2 NOTE: The wire colors in the illustration refer to
"pigtail" HID readers; the information in parentheses refers to
"terminal block" HID readers.
|
| C | RS-485 bus | RS-485 bus connection to other Mercury modules. NOTE: When using
the TB2 port for RS-485, the controller can only support one
reader (TB3).
|
| D | Power In | Connect + to VIN (observe polarity). Connect - to GND. Use 20 AWG
wires minimum. NOTE: Set jumper J3 to 12V.
|
| E | Ethernet cable | Connect to the Synergis™ Cloud Link directly or through the network infrastructure. |
| F | Address switches | Used to set the device address. For more information on address settings on the Mercury controller, refer to the manufacturer's instructions. |
| G | Relay outputs | 2A inductive @30 V dc, 0.6 PF |
| H | Resistors | For OSDP integrations, prevent readers from misinterpreting noise
on a non-driven RS-485 line as data by installing a 1k ohm pull-down
resistor from D0 to GND on TB2. For wiring distances over 10 meters, install a 120 ohm termination resistor between D0 and D1, as well as between A (-) and B (+) on the RS-485 bus of the last connected reader. To find out whether you need to add a 1k ohm pull-down resistor between D0 and GND, see [KBA-78953] Communication issues between OSDP readers and some Mercury hardware. |
aMercury LP1501 controllers are only capable of driving an OSDP reader from TB2