Manual
STEP DCE UPS POWERSUPPLY ST2055
Edition 1
Content
2 Overview
6.3 Connecting Door environment
1 Introduction
This article provides instructions for setting up, installing, using and maintaining the ST2055 UPS Power supply.
2 Overview
Following is an overview of the PCB board and UPS unit for the ST2055.
2.1 Connection board
2.2 Connections
3 Status LED indicators
The ST2055 PCB board is equipped with six status LED indicators that provide
important information about the device status.
- ETH – Indicate a working Ethernet connection on Lan port. (flashing)
- PLC – Indication of communication on Power line (flashing)
- PWR – Indicate that this board have power.
- MAIN – Indication of incoming 220-240VAC
- CHG – Indication of charging
-
BAT – Indication of battery status
4 Power supply
The J12 input on UPS unit is a connection point for an external power source
(220-240 VAC),
WARNING: Only certified electricians should work and connect high voltage.
5 Batteries
The ST2055 has two connection pair for batteries, The system operates on 24v dc, this means 2 x12v batteries should be connected on each line.
Battery line 1 Battery line 2
NOTE: System cannot be started on batteries, Power bring up must be done with 220-240V main power connected, batteries is not activated until system has measured that correct voltage exist in the battery terminals.
6 Installation
WARNING: Only power on the ST2055 once you have carefully read and
understood these instructions and confirmed that the unit is properly connected.
Failure to follow these instructions may result in damage to the product and
render it inoperable.
6.1 Cabling
Prior to installing the ST2055 power supply, it is crucial to ensure that
all necessary cables are properly installed in the unit.
6.1.1 Ethernet cable
The first and most important cable is the network cable this is required to be at least CAT5 and connect the power supply with an internet connected switch. This cable provides Ethernet connectivity for two-way communication between the DCE network and the Cloud. If you crimp you own cable it is recommended to test the Ethernet cable with at network tester to confirm it is working correctly.
6.1.2 Standard wiring
In addition to the Ethernet cable, standard wiring is required to connect the devices out in the building with the power supply.
Table 1 provides an overview indication of the current draw for cables with different conductor cross-sectional areas. Please note that this is for guidance only. Sizing requires a calculation based on the specific conditions of the actual installation.
Table 1 – Reference values for maximum current draw in copper cables
| Length (m) | 0,22 mm2 | 0,3 mm2 | 0,5 mm2 | 1 mm2 |
| 50 | 0,64 | 0,87 | 1,45 | 2,91 |
| 100 | 0,32 | 0,44 | 0,73 | 1,45 |
| 150 | 0,21 | 0,29 | 0,48 | 0,97 |
| 200 | 0,16 | 0,22 | 0,48 | 0,73 |
Note: Remember when use existing wires keep attention to the amount of power that can be transferred on a special cable size.
6.1.3 Tools, Cables and plugs
Being well-prepared with the necessary equipment can facilitate a smooth
and efficient setup, reducing the likelihood of encountering issues or delays.
Some of the tools you may want to have on hand for a seamless installation
Include:
• A high-quality RJ45 termination tool is indispensable for a successful installation.
This tool guarantees a secure and accurate termination of the CAT6 cable to the RJ45 plug, which is vital for establishing a stable and reliable connection between the power supply and the ethernet switch
• An RJ45 network cable tester is essential for evaluating the CAT6 cable after termination. This instrument helps verify that the cable has been correctly terminated and is functioning as intended, ensuring the integrity of the connection.
Note: It's essential to use high-quality RJ45 plugs for secure and accurate terminations, as this contributes to stable and reliable connections. Be sure to use short plugs to maintain optimal performance and connectivity.
6.2 Physical installation
NOTE: It is crucial to verify that all cables are installed properly and
securely to prevent any potential complications or errors 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 working condition before proceeding with the installation.
This will help to prevent any potential issues that may arise due to faulty or improperly
installed cables.
IMPORTANT: Always remove power to the door controller before connecting
devices or accessories to it
6.2.1 Placement
ST2055 Power supply can be placed on either the wall or in a 19” rack.
For rack placement slide in the mounting ears facing forward until you hear a small click, then they are in locked position.
For wall placement slide in the mounting ears facing backward until you hear a small click,
then they are in locked position.
6.3 Connecting Door environment
The power supply has 4 fused outputs, these outputs is used to connect the wires from the door environment, several environments can share terminal as long as they do not trip the fuse. Each output is limited to 1.5 Amps as the total budget of the device is 6 Amps.
Note: it is possible to mate 50% of total budget through one terminal so if the existing system does not enable to section between all for terminals, then a fuse of max 3Amps can be mounted in two of the outputs.
IMPORTANT: You can max connect 7 devices in the dce network, 8 including this master.
6.4 Ethernet
To connect the power supply and DCE network to ethernet you need to connect the ethernet cable to the connector J1
Maximum cable length is according to ethernet standard 90M
6.5 Fuses
Each of the outputs on the power supply is equipped with a fuse, each fuse is 1,5A on delivery, if the existing installation does not enable you to section the doors for all 4 terminals it is possible to use a larger fuse on 2 of the output if you remove the fuse for the other 2 so only 2 outputs is enabled, this will allow you to mount 3A on each output.
Fuses we use is a standard 5x20 glass fuse.
7. Start up
IMPORTANT: You cannot start system with battery only, as the ups if fail secure design, it will not activate the battery function until it have measured and verified correct connection on the batteries.
Now it is time to start up the system.
- Verify you have connected batteries and devices correctly
- Connect 230V ac to the Power supply,
- Device start up