Each Network Node enclosure has eight (8) slots in the aluminum chassis. The leftmost slot is reserved for the Network Node blade.

In addition, each enclosure supports up to seven (7) application extension blades in any combination. Three (3) types application extension blades are supported:

• Access control blade (ACM): Includes two (2) Wiegand reader interfaces (Input Rated: 6V/70mA).

  • An access control blade is included in the Network Node enclosure.

  • An access control blade is compatible with UL listed Wiegand readers.

• Input blade: Includes eight (8) supervised inputs (Input Rated: 6V/60mA).

• Output blade: Includes eight (8) relay outputs (Input Rated: 6V/55mA).

To add application blades to your system in the future, see Install additional blades to install a slot-mounted blade in the Network Node enclosure.

This section describes how to connect readers, inputs, and outputs to the application extension blades in a Network Node enclosure.

Practical Guidelines for Effective Shielding

When wiring readers, inputs, outputs, and temperature sensors, follow the guidelines below for effective cable shielding:

• Make sure your cable has sufficient shielding for the application’s needs. In moderately noisy environments, a foil alone may provide adequate protection. In noisier environments, consider braids or foil-braid combinations.

• Use a cable suited to the application. Cables that experience repeated flexing should generally use a spirally wrapped shield rather than a braid. Avoid foil-only shielding on flex cables, because continuous flexing can tear the foil.

• Make sure the equipment to which the cable is connected is properly grounded. Use an earth ground wherever possible and check the connection between the ground point and the equipment. Eliminating noise depends on a low impedance path to ground.

• Most connector designs allow full 360° termination of the shield. Make sure the connector offers shielding effectiveness equal to that of the cable. For example, many common connectors are offered with metal-coated plastic, cast zinc, or aluminum backshells.

• Ground the cable at one end. This eliminates the potential for noise-inducing ground loops.

Wire Readers

To wire readers:

1. Make sure you are grounded, and then pull the wiring through a knockout in the enclosure.
   Wire specification: Refer to the reader manufacturer's installation guide for cable/wiring recommendations and maximum distance.

2. Connect the reader wires to the 7-pin reader connector provided. Trim any excess wires so that there is no exposed conductor material. Wrap the excess wires around the outer jacket of the reader pigtail and secure it with electrical tape.

   • If this will be configured as a Wiegand reader, wire all seven pin connectors, and then plug the connector into a reader position on the access control blade.

7-Pin Connector

Connect Readers to a Blade

Access control blades have two 7-pin reader connectors mounted on the blade:

Access Control blade

The color-coded wires from the reader wiring harness must be connected to the 7-pin connector. The color-coding for Power (red), Ground (black), Data 0 (green), and Data 1 (white) is Security Industry Association (SIA) standard.

• Reader Beeper control: This varies by manufacturer and model. Refer to the documentation provided by the reader manufacturer for details on your particular reader. Typically, the reader will beep for the duration of a momentary unlock, or until the door is opened. This occurs whether the door is unlocked by a valid card read or from the application. If no beeper is desired, do not connect the beeper control wire.

• Reader LED control: This varies by manufacturer and model. Some use two-wire LED control and some use one-wire control. Refer to the documentation provided by the reader manufacturer for details on your particular reader. Control involving signal pulsing to change LED color is not supported.

The access control blade has both red and green LED control connections. The 7-pin reader connector location is shown in the 7-pin connector diagram.

Wire Inputs

Inputs are dry contact only. An input looks for a change in resistance, not a change in voltage.

To wire inputs:

1. Make sure you are grounded, and then pull the wiring through a knockout in the enclosure.
   Wire specification: Refer to the input device manufacturer's installation guide for cable/wiring recommendations and maximum distance.

2. Connect the input wires to the 2-pin input connector provided.

3. Make sure there is no power to the system, and then plug the connector into an input position on an access control blade or input blade. These connectors are polarized and can only be inserted one way.

4. If you are connecting previously wired or previously installed inputs, determine the input supervision type: normally open (NO) or normally closed (NC); zero, one, or two resistors; or single resistors in parallel or series.
   You will need this information for the software setup of the input. See the section, Input supervision types.
   Note: The system supports the of use of 1k Ohm resistor only.

5. If you are installing the input device, refer to the input device manual to determine if the device circuit is normally open (NO) or normally closed (NC).

6. Select the input supervision type you want, and then install the supervision resistor(s) at the end of the input line.

Connect Inputs

Inputs can be connected either to an access control blade or to an input blade.

Access control blades have four male, 2-pin input connectors mounted on the blade:

Input connectors mounted on the access control blade

Input blades have eight male, 2-pin input connectors mounted on the blade:

Input connectors mounted on the input blade

Input blades and temperature blades look very much alike. To tell them apart, look at the bar code sticker on the back of the blade. The numerals on the bar code sticker for an Input blade begin with "01", as shown above. The numerals on the bar code sticker for a Temperature blade begin with "08".

If more inputs are required beyond the four provided on the access control blade or the eight provided on the Input blade, additional access control or input blades can be installed in the enclosure. For instructions, see Install additional blades.

Input Supervision Types

Alarm input configuration is not evaluated by UL. Do not use for UL installations.
Use UL Listed EOL resistors.

Dual Resistor Input Circuits

The configuration of resistors shown here must be installed for supervised input resistance values to be properly read by the system:

The configuration of resistors shown above must be installed for supervised input resistance values to be properly read by the system. The four states of the dual resistor input circuits are read according to these values:

Normally Closed Parallel Resistor Input Circuits

The three states of the normally closed parallel resistor input circuit are read according to these values:

Normally Closed Series Resistor Input Circuits

The three states of the normally closed series resistor input circuit are read according to the values:

Normally Closed Unsupervised Input Circuits

The two states of the normally closed unsupervised input circuit are read according to the values:

Normally Open Parallel Resistor Input Circuits

The three states of the normally open parallel resistor input circuit are read according to the values:

Normally Open Series Resistor Input Circuits

The three states of the normally open series resistor input circuit are read according to the values:

Normally Open Unsupervised Input Circuits

The two states of the normally open unsupervised input circuit are read according to the values:

Wire Outputs

To wire outputs:

1. Make sure you are grounded, and then pull the wiring through a knockout in the enclosure.
   Wire specification: Refer to the output device manufacturer's installation guide for cable/wiring recommendations and maximum distance.

2. Refer to the output device manual to determine if the device is normally energized or normally not energized, and if it is DC or AC powered.

3. Connect the output wiring to the 3-pin output connector Pin 1 is normally closed (NC). Pin 2 is common. Pin 3 is normally open (NO).

4. Make sure there is no power to the LenelS2 Node, and then plug the connector into an output position on an access control blade or an output blade. These connectors are polarized and can only be inserted one way.

5. If the output device is DC powered and normally not energized, use the circuit shown in the following diagram:

   

6. If the output device is AC powered and normally not energized, use the circuit shown in the following diagram:

   

7. If the output device is DC powered and normally energized, use the circuit shown in the following diagram:

   

8. If the output device is AC powered and normally energized, use the circuit shown in the following diagram:

   

Connect Outputs

Outputs can be connected either to an access control blade or to an output blade. Access control blades have four 3-pin output connectors mounted on the blade, as shown:

Dry contacts are rated at 24 VDC/AC, 2A for resistive and inductive loads.

If more outputs are required beyond the four provided on the access control blade, additional access control blades or output blades can be installed in the S2 node enclosure. For instructions, see Install additional blades.

Output blades have eight male, 3-pin output connectors mounted on the blade, as shown below. Outputs support any output device that operates on the following maximum electrical ratings: 24 VDC/AC, 2A for resistive and inductive loads.

Related Topics

Configure LenelS2 node readers in Elements

Configure inputs in Elements

Configure outputs in Elements

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