User manual OMRON G3NH

[. . . ] Basic Model Name G3NH: Solid State Relay 2. Rated Load Power Supply Voltage 2: 200 VAC 4: 400 VAC 3. Rated Load Current 075: 75 A 150: 150 A 4. Zero Cross Function Blank: Equipped with zero cross function Ordering Information List of Models Isolation Photocoupler Zero cross function Yes Yes Indicator Rated output load 75 A at 100 to 240 VAC 75 A at 180 to 440 VAC 150 A at 100 to 240 VAC 150 A at 180 to 440 VAC The built-in Thyristor Modules can be replaced. [. . . ] Input Impedance G3NH (4 to 30 VDC) G3NH (75 to 264 VAC) Input impedance (k) Input current Input current Impedance Impedance Input voltage (V) Input voltage (V) Operation Replacement Parts G32A-N Thyristor Module If the thyristor module is damaged, replace it with a new one. Name Thyristor module Applicable load 75 A at 75 to 264 VAC 75 A at 150 to 484 VAC 150 A at 75 to 264 VAC Applicable Relay G3NH-2075B G3NH-4075B G3NH-2150B Model G32A-N2075 G32A-N4075 G32A-N2150 G32A-N4150 150 A at 150 to G3NH-4150B 484 VAC 200 Solid State Relays G3NH Input impedance (k) Input current (mA) Input current (mA) Replacement Be sure to turn off the power before replacement. First, remove the four screws (shown below as "A") and the transparent protective cover from the relay housing and then disconnect the wiring. D A A D A A PWB securing groove Heat sink 2. Remove the four screws (shown in the following as "B") and the nameplate from the relay housing. Assembly of the thyristor module must be performed in the exact reverse order of the previous disassembly steps 1 to 5. Before mounting the new thyristor module for replacement, wipe off the silicone grease adhering to the heat sink, keep clean the jointing surfaces of the heat sink and thyristor module, and apply the new grease (supplied as an accessory) to the jointing surfaces. Secure the thyristor module to the heat sink with the two screws "D" and tighten each screw to a torque of 2. 45 to 2. 94 N·m. Connect the thyristor module to the PWB with the socket. (The socket may be inserted in either direction. ) Assemble the Base Assembly with the heat sink by aligning the PWB with the PWB securing groove and the protective cover with the protective cover securing groove, respectively, while exercising caution not to get any of the leads caught between the Base Assembly and the heat sink. Secure the Base Assembly with the three screws "C". Because a large current flows into these screw parts, make sure that any of the screws is not clogged with foreign matter and tighten each screw to a torque of 4. 41 to 4. 90 N·m. Check the assembled parts again for any lead caught between the Base Assembly and heat sink and for proper fitting of the PWB and protective cover into their respective securing grooves. Then, replace the nameplate and secure it with the four screws "B". 10. Complete the wiring and secure the protective cover with the four screws "A". 11. Apply power to the relay and check the relay for proper operation. B B B B Name plate 3. Remove the three screws (shown in the following as "C") from inside the housing and pull the Base Assembly up to detach. (The Base Assembly cannot be removed thoroughly because of the leads connected to the base. ) C Base 4. When the Base Assembly is detached, you will see the leads connected to the built-in thyristor module. Pull the connector to disconnect the leads. [. . . ] Take proper measures so that the heat sink will be protected from dust. Load Connection Securely tighten the LOAD terminal screws with the torque specified in the following list after you connect the load to the LOAD terminals. If the tightening torque is not enough, the terminals will generate heat. Model G3NH-@075B G3NH-@150B Tightening torque 4. 41 to 4. 90 N·m 8. 82 to 9. 80 N·m ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0. 03937. [. . . ]