Manual

STEP OSDP Door Controller ST2042-DCE
Version 1

Item number: ST2042-DCE

1. Introduction

This document provides instructions for configuring, installing, operating, and maintaining the ST2042 DCE door controller.

1.1 Technical specifications

2.Overview

Below is an overview of the PCB board for the different models of ST2042.

2.1 ST2042 DCE

2.2 Connections

3 LED Indicator

The ST2042 PCB board is equipped with three status LED indicators that provide important information about the device’s status.

• The first indicator, labeled ACT on the board, flashes when the firmware is running. This indicator should flash approximately every five seconds. If ACT does not flash, it may indicate a problem with the ST2042 or its hardware.
• The second indicator is labeled PWR. It remains constantly lit when the ST2042 unit is powered and operating correctly. This LED ensures that the device has a stable power supply. Flickering on this LED is likely a result of insufficient power supply.
• The third indicator is labeled WDT and functions as a watchdog timer, monitoring the system. It flashes once per second when the watchdog is active.

4 Power Supply

The ST2042 DCE is powered via the ST2055 DCE-Master. For more information see manual for ST2055.

4.1 Jumper Pins

The ST2042 has 2 jumper pins, both used to adjust the voltage to locks or card readers.

J3 is used to adjust the voltage for the J2 Lock Output.

J8 is used to adjust the power supply voltage to the OSDP devices connected to the door controller.
 

Clarification:

• By setting the jumper pin to 24V, the voltage at the lock output becomes 24VDC.
• By setting the jumper pin to 12V, the voltage at the lock output becomes 12VDC.
   
   

5 Outputs

5.1 J2 - Lock Output

The pins on the "Lock Relay" are labeled "+(nc) | - | +(no)".
In practice, if you have a fail-safe electronic lock, you must connect the "+" wire to the right pin labeled "+(no)". Conversely, if you have a fail-secure configuration, the "+" wire should be connected to the left pin labeled "+(nc)".

NOTE: It is important to understand that the correct wiring configuration depends on the type of electronic lock used. A fail-secure configuration keeps the door locked in the event of a power failure, while a fail-safe configuration unlocks the door in the same situation. Therefore, it is crucial to identify the correct wiring setup for the specific lock used to ensure proper functionality and security.

5.2 J7 - Relay Output

J7 – Relay Output, is a potential-free relay that can be connected to a door environment in the same way as the lock output. It can also be connected to a separate door environment with its own readers, independently from the door environment controlling the lock output.

5.3 J14 - Alarm Bypass

J14 – Alarm Bypass is a dedicated relay designed to control an alarm. This switch allows you to manage the alarm for the specified zone directly from the access control system.

Be aware that J14 – Bypass is designed to control only one zone at a time. To manage multiple zones or customize zone controls, refer to the relevant sections in the alarm system’s user manual. Configuration of these functions must be performed within the alarm system itself to ensure proper operation and security.

6 Inputs

6.1 J4 - LED +/-

The J4 input functions as a confirmation for the activation or deactivation of the alarm system. The LED input must be connected when an external alarm system is used. The input is designed to accept a voltage range of 5V to 12V DC, ensuring compatibility with various alarm system configurations.

5.5 J5 – Exit Button

The J5 port, also known as the exit button input, is designed to trigger an output. By default, it is connected to the lock output, but this can be configured in the Cloud, where you can link the input to multiple outputs.

The exit button has two different modes: Normal Mode or Bistable Mode.

In Normal Mode, the connected outputs are activated and released either when the unlock time expires or when the door is opened.

In Bistable Mode, the connected outputs are activated and held in the active state until the button is released, plus the configured unlock time.

NOTE: It is important to understand that triggering the J5 port may cause immediate and simultaneous activation of both the J7 and J2 ports. Therefore, it is recommended to use this function carefully and with proper consideration of the potential consequences of the configuration.

5.6 J1 - Door Sensor 

The door sensor input is used to monitor the status of the door sensor.
If the input is connected to a door environment, the unlock time will be shortened when the door is opened, and the lock will be secured.

If a door sensor is connected to a door environment, it can also be used as a door alarm. In this case, the card reader can use its buzzer to signal an open door, and notifications can also be sent via email.

7 Interface 

7.1 OSDP Interface 

The ST2042 is equipped with an OSDP communication interface, which is used to connect an OSDP slave device (such as a card reader or lock) to the controller.

The card reader is connected to the door controller using the CON3 power output and the CON4 OSDP output.

The voltage to the card reader is controlled by the J8 jumper pin.

Note: No joints/splices are allowed between the Door Controller and the card reader.

8 Installation

WARNING: Power on the ST2042 DCE only after carefully reading and understanding these instructions and confirming that the device is correctly connected. Failure to follow these instructions may result in damage to the product and render it unusable.

8.1 Preparation in Cloud Software

Before installing the ST2042 Door Controller, it is important to ensure that the following tasks have been completed in StepLock Cloud.

• Create a Cloud Tenant for the end customer. This tenant will serve as the platform for managing and monitoring the device and its associated components.
• Create a property within the end customer’s cloud tenant. This allows the customer to manage and monitor the device and its associated components at a specific location. A system must have at least one property.
• Add the device’s MAC address to the end customer’s Cloud tenant. This ensures that the access control system is properly integrated and can communicate with the specified device.

8.2 Wiring 

Before installing the ST2042 Door Controller, it is important to ensure that all necessary cables are correctly installed at the door location.

Please note that each power and communication output on the DCE-Master 2055 is by standard protected by a 1.5 A fuse. This must be considered when sizing connected power-consuming equipment.
The fuse can be replaces with a higher Ampere. For more information see manual for ST2055.

8.2.1 Cable

In addition to the cable from the DCE-Master UPS, standard cables are required to connect the electronic lock, exit button, and other related components to the door controller. It is important to install these cables securely to prevent complications or failures during the installation process.

To select the correct cable between the DCE-Master UPS and the ST2042 DCE, and possibly onward to the next DCE unit, a power calculation must be performed, including all connected equipment: ST2042, card reader, electric locking devices, and any other power-consuming equipment.

NOTE: If you have a series connection with 3 door environments, all equipment for these 3 door environments must be included in the power calculation for the individual cable.

Table 1 provides a general indication of the current capacity for cables with different conductor cross-sections. Please note that this is only a guideline. Proper sizing requires a calculation based on the specific conditions of the actual installation site.

Table 1 – Reference Values for Maximum Current Draw in Copper Cables

8.3 Installation

NOTE: It is important to verify that all cables are correctly and securely installed to prevent any complications or failures during the installation process. It is recommended to visually inspect all cables and use a network tester to confirm that the cables are in good condition before proceeding with the installation. This will help prevent potential issues caused by incorrect or improperly installed cables.

Important: Always disconnect power from the door controller before connecting new accessories.

8.3.1 Placement 

A common location for mounting the door controller is above the door, as this is typically where most of the connections for the electronic lock, exit button, and door opener are located.
By installing the Door control unit in this location, it can easily and efficiently control and monitor the operation of these components.

8.4 Connect Lock

8.4.1 Fail Secure

To configure the ST2042 for fail-safe mode, connect the positive (“+”) wire to the right pin “+(no)” on the J2 Lock Output and the negative (“–”) wire to the center pin on the J2 Lock Output, as shown below. Make sure to set the voltage jumper to the correct voltage for the lock.

8.4.2 Fail safe

To configure the ST2042 for fail-secure operation, connect the positive (+) wire to the left pin "+(nc)" on the J2 Lock Output and the negative (–) wire to the center pin (–) on the J2 Lock Output. This wiring configuration ensures that the door remains unlocked in the event of a power failure, allowing safe exit from the building.

NOTE: If electronic locks other than StepLock are used, it is recommended to install a protection diode (e.g. 1N4004) between the electronic lock and the output.

8.5 Connect Exit Button

Connecting the exit/open button to the door controller is a simple process. Connect it to the J5 connector; if the button requires power, supply it from CON3.

NOTE: If you plan to use multiple card readers and an exit button that requires power, it is important to carefully plan your power consumption to ensure that sufficient power is available for all the devices you need to operate.

8.6 Doorr sensor

Connecting the door sensor to the door controller is a simple task. Connect the wires to the J1 door sensor input as shown in the image below.

8.7 Card Reader

The door controller has an interface for OSDP devices. The OSDP interface is located at CON4, and power is provided via CON3. From these two connectors, four cables run to the card reader.

The door controller can handle up to 4 individual card readers on an ST2042 door controller. It is important to check the termination of the devices to ensure proper operation.

Note:

• It is important to assign each card reader a unique address using the address switch on the reader. If you are using brands of readers other than StepLock, please refer to the reader's manual for instructions on how to address that specific OSDP device.
• Always consult the card reader’s manual before connecting power to CON3. The voltage is adjusted by selecting either 12V or 24V output.
• 24V on the jumper pin means that the output generates 24VDC
• 12V on the jumper pin means that the output generates 12VDC

8.8 Intrusion Alarm

The door controller can be connected as a Master to an alarm system. When the door controller is connected to an alarm system, it can manage arming/disarming and automatic activation.

You connect the door controller by wiring a bypass input to J14 Bypass and a status output to the J4 input. J4 can receive +5–12 V DC as status input.

Note: This diagram illustrates the connection to the alarm system. Additional resistors may be required to create a single or double balanced loop. Refer to the alarm system’s manual for details.

8.9 Power On the Device

We have now reached the point where everything required to operate the door controller is connected, and we can power on the device.

8.9.1 DCE

Connect the power and communication cable.
The door controller should power on by first lighting the power LED, and after approximately 30 seconds, the watchdog LED should begin blinking.
The system is now started.