24VDC Power Supply February 2010 GFK-1515B Preinstallation Check Installing the Power Supply The power supply module installs on a CPU or Carefully inspect all shipping containers for damage. If any equipment is NIU module or on a Power Supply Booster damaged, notify the delivery service immediately. Save the damaged Carrier. The latch on the power supply must be in shipping container for inspection by the delivery service. After unpacking the the unlocked position, as illustrated. equipment, record all serial numbers. Save the shipping containers and packing material in case it is necessary to transport or ship any part of the Align the connectors and the latch post and system. press the power supply module down firmly, until the two tabs on the bottom of the power supply Specifications click into place. Be sure the tabs are fully Input Voltage 18 to 30 VDC, 24 VDC nominal inserted in the slots as shown. Input Power 11 W Turn the latch to the locked position to secure the Holdup Time 10ms power supply. Inrush Current 20A maximum at 24VDC 25A maximum at 30VDC Output Voltage 5VDC, 3.3VDC Protection Short circuit, overload, reverse polarity Installing Power and Ground Wiring Output Current Standard Power Supply Enhanced Power Connect an appropriate source of 24VDC to (model # n01) Supply (model # n02) the power supply. Terminals accommodate 2 Total 1.5 A* maximum 1.5 A* maximum one AWG #14 (avg. 2.1mm cross section) 2 to AWG #22 (avg. 0.36mm cross section) 3.3VDC Output 0.25 A maximum 1.0 A maximum wire, or two wires up to AWG #18 (avg. 2 5VDC Output (1.5A - I ) max. (1.5A - I ) max. 3.3V 3.3V 0.86mm cross section). Use copper wire rated for 90 degrees C. When inserting two wires in the same position, the wires must * The total output current should not exceed 1.5A. For example, if 3.3V @ be the same size and type (solid or 0.25A is required, 1.25A is available on the 5V output. stranded). + - Connect the ground terminal to the Installing a Power Supply Booster Carrier (optional) conductive mounting panel with a 10cm (4- inch) maximum length of AWG #14 (avg. The power supply can be installed on a CPU or NIU module, or on a Power 2 2.1mm ) or larger wire. Use hardware such Supply Booster Carrier. To install a booster carrier, follow the guidelines as star washers to ensure ground integrity. below. Installing Suppression at the Power Lines Installing the Carrier on a DIN Rail For agency compliance, external MOV suppression is required from both the positive and negative input to frame Connecting carriers must be installed on the same ground or at the power line input of a section of 35mm x 7.5mm DIN rail. The rail must system enclosure. have a conductive (unpainted) finish for proper MOV protection across the inputs is grounding. For best resistance to vibration, the provided on the supply and not DIN rail should be installed on a panel using +- necessary to add externally. screws spaced approximately 6 inches (5.24cm) apart. The axial-leaded ZA series of MOVs from Harris is often used. The 20mm The carrier snaps easily onto the DIN rail. No tools size, model V36ZA80 rated at 160 are required for mounting or grounding to the rail. joules should be able to handle most line transients. Measurement of actual Removing the Carrier from the DIN Rail transients may be required in extreme cases to decide what MOV to use. 1. If the carrier is attached to the panel with a screw remove the screw. Removing the Power Supply 2. If the carrier is installed between other carriers, it will be necessary to move the other carriers along the DIN rail to disengage the mating Exercise care when working around operating equipment. Devices connectors on both sides of the carrier being removed. may become very hot and could cause injury. 3. Slide the carrier along the DIN rail away from the other modules until 1. Remove power. the connector disengages. 2. Turn the latch to the unlocked position as 4. With a small flathead screwdriver, pull the DIN rail latch tab outward illustrated. while tilting the other end of the module down to disengage it from the DIN rail. 3. Press in the tabs on the lower edge of the power supply. 4. Pull the power supply straight off.