TRACO TIS600 power supply

The battery mode can be activated by connecting Pin 7 and Pin 8. During actual wiring, the function and polarity of these two pins should be confirmed according to the terminal diagram, and dry contacts or control signals that meet the requirements should be used to avoid mistakenly applying external voltage to the logic input. Even if the power supply itself has short-circuit protection for the battery circuit, it is recommended to install fast fuses according to the data requirements to reduce the risk of battery backflow and external short circuits. The battery pack is equipped with a resettable electronic fuse, which is fixed on the installation frame. When replacing it, a matching battery pack should be used. Do not mix and parallel batteries of different capacities, chemical systems, or aging degrees randomly.

Alarm relay, remote control and wiring

TIS600-124UDS provides two independent relay alarms: AC Powerfail and Battery Low. The detection condition for AC Powerfail is that the input voltage is below about 93 VAC (115 V range) or below about 187 VAC (230 V range), and relay A is activated. The closed contacts provided in the data are Pin 2 to Pin 3. The detection condition for Battery Low is that the battery voltage is below 22V, and the closed contact of relay B is Pin 5- Pin 6. The rated values of the two relay contacts are both 60 VDC/0.36 A maximum, and cannot directly drive high-power contactors or high-voltage circuits. They should be switched through intermediate relays or PLC digital inputs.

When wiring on site, it is recommended to connect the AC Powerfail to the PLC's "mains fault" diagnostic point and connect the Battery Low to the "battery will be depleted" warning point, rather than waiting until the low voltage shutdown to handle it. This can arrange a safe shutdown or switch to a backup power source before the battery is completely discharged. If the system needs to remotely disable battery mode, the control logic of Pin 7/8 should be confirmed: the data shows that battery mode can be activated by connecting Pin 7 and 8. Therefore, if these two pins are short circuited during maintenance, the system will enter battery mode after the mains power is lost; On the contrary, if it is necessary to prohibit battery input, it should be disconnected according to control requirements or controlled through relays. All alarm contacts and control lines should be routed separately from the power lines to avoid interference from noise sources such as frequency converters and contactors.

Installation, heat dissipation, and selection taboos

The TIS600-124UDS is installed on DIN rails, with a chassis size of approximately 243 mm wide, 177.2 mm high, and 82.6 mm deep. The weight is not directly given in the data, but the TIS600 of the same series belongs to the heavier 600 W power supply. When installing, ensure that the rail buckle is locked tightly and leave heat dissipation space above and below. It adopts natural cooling, and the temperature inside the cabinet must be controlled below 70 ° C. If it exceeds 50 ° C, the rating will be reduced by 2%/° C. If the battery pack and power supply are installed in the same cabinet, charging the battery will generate heat, and the battery life is sensitive to temperature. The standby life at 20 ° C is about 4-5 years, and the increase in temperature will significantly shorten the life. Therefore, the battery pack should be installed in a well ventilated and cooler location as much as possible, avoiding close contact with heating elements.

The most common mistake when selecting is to use the TIS600-124UDS as a regular 24V/600W power supply, ignoring the power consumption and output current deduction of battery charging; Or mistake the redundant function of TIS xxx RED for UDS also having it. The focus of UDS is battery backup, the focus of RED is multi power parallel redundancy, and the focus of SIG is signal contacts and remote switches, which cannot replace each other. If N+1 redundancy is required on site, the RED model should be selected; If only mains power failure and DC-OK signal are needed, SIG model can be selected; If you need to continue running after power failure, select UDS and match it with a battery pack. When replacing the old power supply, it is also necessary to check the battery voltage, capacity, charging current, alarm contacts, and Pin 7/8 control mode of the original system, rather than just looking at whether the output 24 VDC and power are similar.

On site debugging and common troubleshooting

Fault 1: The mains power is normal, but the battery is not charging or charging is slow. First, check if the charging current setting is set very low. The adjustable range of TIS600-124UDS is 0.25-2.5 A, and the factory setting is 2.4 A. Then confirm if the battery pack model is TIS 24-70 AP or a 24V lead-acid battery pack with matching parameters, and if the battery is equipped with a resettable electronic fuse and has been reset. Measure whether the charging voltage is within the range of 27-27.6 VDC and whether the battery temperature exceeds the charging range of -15 to 50 ° C. If the internal resistance of the battery increases due to aging, the charger may enter protection or the charging current may be limited. Battery testing or battery pack replacement should be performed. It is also necessary to confirm that Pin 7/8 has not been misconnected, causing the system to remain in battery mode for a long time, otherwise the charging logic will be abnormal when there is mains power.