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| Cycle Control Unit G32A-EA Used in Combination with the G3PA SSR to Enable High-precision Temperature Control * Uses cycle control to achieve power control with little noise. * Used in combination with the G3PA SSR to connect to single- and three-phase loads. * Three types of input method available: Internal adjuster, external adjuster, or DC signals from 4 to 20 mA. * Streamline design. Both DIN-track mounting and screw mounting possible. * Uses linking terminals for close mounting with G3PA SSR. * Built-in isolation transformer. * Power supply range: 100 to 240 V. Ordering Information Name Cycle Control Unit Yes Isolation transformer Rated power supply voltage 100 to 240 VAC G32A-EA Model Application Examples * * * * Electric furnaces Thermostats Food-processing machinery Drying machinery * Molding equipment * Heating devices * Other applications requiring high-precision temperature control Specifications Ratings Item Rated power supply current 50 Hz 60 Hz Output signal Input signal 100 (200) VAC 120 (240) VAC 100 (200) VAC 120 (240) VAC 15 mA max. at 12 VDC 15% (at 25C) Current signal: 4 to 20 mA (input impedance: 352 ) (see note) Internal adjuster: 50 k (1/4 W) External adjuster: 50 k (1/4 W) 0 to 100% 0.2 s 2 G3PA Relays max. 40 mA max. Specifications Output cycle rate Control cycle Number of operable units Note: The values given for current signals are for operation at room temperature. Cycle Control Unit G32A-EA 1 Characteristics Item Power supply voltage range Dielectric strength Vibration resistance Shock resistance Storage temperature Ambient operating temperature Ambient operating humidity Weight 75 to 264 VAC 1,500 VAC, 50/60 Hz for 1 minute (between AC power supply and input/output terminals) 10 to 55 Hz, double amplitude of 0.75 mm2 (when mounted to DIN track) 300 m/s2 (approx. 30 G) -30 to 100C (with no icing or condensation) -30 to 80C (with no icing or condensation) 45% to 85% Approx. 100g Specifications Engineering Data 2 Cycle Control Unit G32A-EA Nomenclature The following diagram shows the terminals, adjusters, and switches of the G32A-EA. Setting the Input Method Select external adjuster, internal adjuster, or control current as the input method using the selection switches as shown in the following table. Control method External adjuster Input selection slide switches Internal adjuster (see note 2) Control current Note: 1. The input selection slide switches are factory set to internal adjuster input. Change the setting of the switches for the input method required. 2. When using the internal adjuster, use with the input terminals (C1, C2) in the open state. Internal setting is not possible if there is a Temperature Controller or other device connected to C1 or C2. Cycle Control Unit G32A-EA 3 Cycle Control Setting Method The output cycle rate can be adjusted using the internal or external adjuster. For current control, refer to the Output Cycle Rate vs Control Current graph on page 2. Note: When using the internal adjuster or external adjuster, it is necessary to set the input control method in the way described previously. Output Power Resolution When power is controlled using the Cycle Control Unit, the output resolution (minimum variation value) changes depending on the power supply frequency. (SSR with zero cross function.) Control cycle 0.2 s 5% Output power resolution 50 Hz 4.2% 60 Hz Cycle Control Method The power on the load side can be controlled by adjusting the number of cycles within the control cycle of 0.2 s and repeating this control cycle. 4 Cycle Control Unit G32A-EA Operation Application Examples High-precision temperature control can be achieved in combination with the G3PA. 1. Control Using Current Input 3. Control Using Internal Adjuster 2. Control Using External Adjuster Applications 1, 2, and 3 each use a different type of input method and so it is necessary to change the settings of the input selection slide switches. Be sure to change the slide switch settings in accordance with the input method. Note: 1. For details of input selection slide switch settings, refer to Setting the Input Method. 2. The above examples are for when a G3PA-VD (except 60-A models) is used at 200 VAC. Cycle Control Unit G32A-EA 5 External Adjuster G32A-E-VR The external adjuster, its adjuster knob, and its nameplate, all come in a set (G32A-E-VR). External Adjuster (50 k, B Characteristic) Note: When using the external adjuster for input, be sure to set the input selection slide switches accordingly. Nameplate Knob 6 Cycle Control Unit G32A-EA Dimensions Unit: mm G32-EA Terminal Arrangement/Internal Connection Mounting Holes Cycle Control Unit G32A-EA 7 ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, divide by 25.4 OMRON ELECTRONICS LLC One Commerce Drive Schaumburg, IL 60173 OMRON CANADA, INC. 885 Milner Avenue Toronto, Ontario M1B 5V8 OMRON ON-LINE Global - http://www.omron.com USA - http://www.omron.com/oei Canada - http://www.omron.ca 847-843-7900 For US technical support or other inquiries: 416-286-6465 800-556-6766 Cat. No. G32AEA-E3-1 10/02 Specifications subject to change without notice Printed in USA 8 Cycle Control Unit G32A-EA |
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