Wiring and Connections
Input/Output (I/O) Port: Connections and Wiring
The I/O port responds to either switch closures, voltage level (high/low) changes, or it can be used for
A contact closure between the GND and an I/O port is detected as a Push.
When used for voltage inputs, the I/O port detects a low signal (0 - 1.5 VDC) as a Push, and a high signal (3.5 - 5 VDC) as a Release (this IO port uses 5V logic but can handle up to 12V without harm).
When used for outputs, the I/O port acts as a switch to GND and is rated for 200 mA @ 5 VDC. This device can use up to 2 I/O ports (see table below).
The PWR pin provides +5 VDC @ 200 mA.
The GND connector is a common ground and is shared by all I/O ports (see table below).
I/O Port Wiring Specifications
Pin | Signal | Function |
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1 | 5 VDC | PWR |
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2 | I/O 2 | Input/Output |
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3 | I/O 1 | Input/Output |
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4 | GND | Signal GND |
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Connecting The Device via I/O
When connecting the I/O port, the GND on the Metreau Entry Communicator must be connected to the ground of the I/O device, e.g., a master or any third party I/O device.
Relay Port: Connections and Wiring
You can connect up to 2 independent external relay devices to the Relay connectors on the Metreau Entry Communicators.
Do not use the relays on this unit for "secure" applications such as door and gate releases. For security reasons, an external relay box put in a secure location will work better for these devices.
Connectors labeled A are for common; B are for output.
Each relay is isolated and normally open.
Metreau Entry Communicators | 11 |
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