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Basler AEM-2020 Accessories Manual

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12570 Route 143 • Highland, Illinois 62249-1074 USA
Tel +1 618.654.2341 • Fax +1 618.654.2351
www.basler.com • info@basler.com
DGC-2020HD
Digital Genset Controller
Accessories Instruction Manual
9469300997, Rev G
Publication
October 2023

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  • Page 1 DGC-2020HD Digital Genset Controller Accessories Instruction Manual Publication 12570 Route 143 • Highland, Illinois 62249-1074 USA 9469300997, Rev G Tel +1 618.654.2341 • Fax +1 618.654.2351 www.basler.com • info@basler.com October 2023...
  • Page 2 Proposition 65 warning, we are notifying you that one or more of the Proposition 65 listed chemicals may be present in products we sell to you. For more information about the specific chemicals found in this product, please visit https://www.basler.com/Prop65.

  • Page 3: Conventions Used In This Manual

    9469300997 Preface This instruction manual provides information about the accessories for the DGC-2020HD Digital Genset Controller. To accomplish this, the following information is provided: AEM-2020 (Analog Expansion Module) • • CEM-2020 (Contact Expansion Module) VRM-2020 (Voltage Regulation Module) • Conventions Used in this Manual Important safety and procedural information is emphasized and presented in this manual through Warning, Caution, and Note boxes.
  • Page 4 The availability and design of all features and options are subject to modification without notice. Over time, improvements and revisions may be made to this publication. Before performing any of the following procedures, contact Basler Electric for the latest revision of this manual.
  • Page 5 For a complete copy of GNU GENERAL PUBLIC LICENSE Version 2, June 1991 or GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 refer to www.gnu.org or contact Basler Electric. You, as a Basler Electric Company customer, agree to abide by the terms and conditions of GNU GENERAL PUBLIC LICENSE Version 2, June 1991 or GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999, and as such...
  • Page 6 9469300997 Preface DGC-2020HD...

  • Page 7: Revision History

    Updated Proposition 65 statement. • B, October 2018 Added California Prop 65 warnings. • Added UL, Class I, Div. 2 for AEM-2020 and CEM-2020. • Updated EAC certificate number for AEM-2020 and CEM-2020. • Added analog current input connection diagrams for AEM-2020.
  • Page 8 9469300997 Revision History DGC-2020HD...
  • Page 9 9469300997 Contents AEM-2020 ..............................1-1 CEM-2020 ..............................2-1 VRM-2020 ..............................3-1 DGC-2020HD Contents...
  • Page 10 viii 9469300997 Contents DGC-2020HD...

  • Page 11: Specifications

    9469300997 1 • AEM-2020 The AEM-2020 (Analog Expansion Module) is an optional remote device that provides additional DGC-2020HD analog inputs and outputs. A CAN interface configured for 250 kbps supports the following combinations of AEM-2020, CEM-2020 and VRM-2020 modules: Up to six CEM-2020s, two AEM-2020s, and one VRM-2020 •...

  • Page 12: Analog Outputs

    Tested in close proximity to an unshielded, unsuppressed Altronic DISN 800 ignition system. HALT (Highly Accelerated Life Testing) HALT is used by Basler Electric to prove that our products will provide the user with many years of reliable service. HALT subjects the device to extremes in temperature, shock, and vibration to simulate years of operation, but in a much shorter period.
  • Page 13 X: Indicates that the hazardous substance content in at least one of the homogenous materials of this part exceeds the limit specified in standard GB/T 26572. Physical Weight ............. 1.80 lb (816 g) Dimensions..........See Mounting later in this chapter. Functional Description A functional description of the AEM-2020’s inputs and outputs is provided below. DGC-2020HD AEM-2020...

  • Page 14: Thermocouple Inputs

    9469300997 Analog Inputs The AEM-2020 provides eight analog inputs that are user-selectable for 0 to 20 mAdc or –10 to 10 Vdc. Each analog input has under/over thresholds that can be configured as status only, alarm, or pre-alarm. When enabled, an out of range alarm alerts the user of an open or damaged analog input wire. The label text of each analog input is customizable.
  • Page 15 2-position thermocouple connectors. The 16, 5, and 2-position connectors plug into headers on the AEM-2020. The connectors and headers have dovetailed edges that ensure proper connector orientation. Also, the connectors and headers are uniquely keyed to ensure that the connectors mate only with the correct headers.

  • Page 16: Control Power

    6 to 32 Vdc. Control power must be of the correct polarity. While reverse polarity will not cause damage, the AEM-2020 will not operate. Control power terminals are listed in Table 1-1. It is recommended that a fuse be added for additional protection for the wiring to the battery input of the Analog Expansion Module.
  • Page 17 When using the current input, voltage across the AIN input at 20 mA is approximately 2 Vdc. The transducer power supply must be high enough to be greater than the drop in the transducer plus the voltage on the AIN input. DGC-2020HD AEM-2020...
  • Page 18 9469300997 Figure 1-3. Analog Inputs - Voltage Input Connections Figure 1-4. Analog Inputs - Current Input Connections, Type II 2-Wire Current Loop Circuit AEM-2020 DGC-2020HD...
  • Page 19 9469300997 Figure 1-5. Analog Inputs - Current Input Connections, Type III 2-Wire Current Loop Circuit Figure 1-6. Analog Inputs - Current Input Connections, Type IV 2-Wire Current Loop Circuit DGC-2020HD AEM-2020...

  • Page 20: Can Interface

    External RTD Input Connections External 2-wire RTD input connections are shown in Figure 1-7. Figure 1-8 shows external 3-wire RTD input connections. RTD cable shields should connect to ground as close to the AEM-2020 as possible with as short a lead as practical.
  • Page 21 . If more than one ® AEM-2020 is connected, the serial number of each module must be entered. An AEM Not Configured pre-alarm will occur if the expected serial number does not match the serial number detected on the General Settings, Device Info screen. The Remote Module Setup screen is illustrated in Figure 1-11.

  • Page 22: Remote Analog Inputs Configuration

    (0), the input protection is active at all times, including when the engine is not running. If the arming delay is set to a non-zero value, the input protection is inactive when the engine is AEM-2020 DGC-2020HD...

  • Page 23: Logic Connections

    See the BESTlogicPlus chapter in the DGC-2020HD Configuration Manual (Basler publication 9469300995) for more information about analog input out-of-range alarm and pre- alarm logic blocks.

  • Page 24: Operational Settings

    Input Setup Label Text In order to make identification of the remote RTD inputs easier, each of the inputs can be given a user- assigned label. The label is an alphanumeric string with a maximum of 16 characters. AEM-2020 DGC-2020HD...
  • Page 25 Alarm Configuration Each remote RTD input protection threshold item can be independently configured to perform a different action depending on the alarm configuration setting. Alarm configurations are described in the Reporting and Alarms chapter in the Operation manual. DGC-2020HD AEM-2020...
  • Page 26 AEM x Thermocouple Input #y (where x = 1 to 4 and y = 1 or 2) settings screen in BESTCOMSPlus. BESTCOMSPlus Navigation Path: Settings Explorer, Programmable Inputs, Remote Thermocouple Inputs Front Panel Navigation Path: Settings Explorer > Programmable Inputs > Remote Thermocouple Inputs AEM-2020 DGC-2020HD...
  • Page 27 Remote thermocouple input protection logic connections are made on the BESTlogicPlus screen in BESTCOMSPlus. The Thermocouple Input 1, Threshold 1 Status Input logic block is illustrated in Figure 1-16. The output is true during a trip condition. The alarm and pre-alarm logic blocks are similar. DGC-2020HD AEM-2020...

  • Page 28: Remote Analog Outputs Configuration

    Figure 1-17. Settings Explorer, Programmable Inputs, Remote Analog Inputs, AEM 1 Thermocouple Input #1 Remote Analog Outputs Configuration Four remote analog outputs provide voltage or current signals from the AEM-2020 to a variety of industrial transducers. The four, identical remote analog outputs are designated AEM x Output #1 through AEM x Output #4 (where x = 1 to 4).

  • Page 29: Firmware Updates

    Repair Analog Expansion Modules are manufactured using state-of-the-art surface-mount technology. As such, Basler Electric recommends that no repair procedures be attempted by anyone other than Basler Electric personnel. Before returning the AEM-2020 for repair, contact Basler Electric for a return authorization number.
  • Page 30 1-20 9469300997 Storage This device contains long-life aluminum electrolytic capacitors. For devices that are not in service (spares in storage), the life of these capacitors can be maximized by energizing the device for 30 minutes once per year. AEM-2020 DGC-2020HD...

  • Page 31: Specifications

    DGC-2020HD contact inputs and outputs. Two types of modules are available. A low current module (CEM-2020) provides 24 contact outputs and high current module (CEM-2020H) provides 18 contact outputs. A CAN interface configured for 250 kbps supports the following combinations of AEM-2020, CEM-2020 and VRM-2020 modules: Up to six CEM-2020s, two AEM-2020s, and one VRM-2020 •...

  • Page 32: Contact Outputs

    Tested in close proximity to an unshielded, unsuppressed Altronic DISN 800 ignition system. HALT (Highly Accelerated Life Testing) HALT is used by Basler Electric to prove that our products will provide the user with many years of reliable service. HALT subjects the device to extremes in temperature, shock, and vibration to simulate years of operation, but in a much shorter period span.
  • Page 33 9469300997 UL Approval The CEM-2020 is a Recognized Component for the US and Canada under UL file E97035 (CCN-FTPM2/FTPM8) covered under the Standards below: • UL 6200 CSA C22.2 No.14-13 • CE Compliance This product complies with the requirements of the following EC Directives: Low Voltage Directive (LVD) 2014/35/EU •...

  • Page 34: Functional Description

    Inspect for damage, and if there is evidence of such, immediately file a claim with the carrier and notify the Basler Electric regional sales office, your sales representative, or a sales representative at Basler Electric, Highland, Illinois USA.
  • Page 35 9469300997 Figure 2-1. CEM-2020 Overall Dimensions See Figure 2-2 for CEM-2020H overall dimensions. All dimensions are shown in inches with millimeters in parenthesis. DGC-2020HD CEM-2020...
  • Page 36 9469300997 Figure 2-2. CEM-2020H Overall Dimensions Connections Contact Expansion Module connections are dependent on the application. Incorrect wiring may result in damage to the module. Notes Control power from the battery must be of the correct polarity. Although reverse polarity will not cause damage, the CEM-2020 will not operate.
  • Page 37 9469300997 orientation. The connectors and headers are uniquely keyed to ensure that the connectors mate with only the correct headers. Caution By mating conductors of dissimilar metals, galvanic corrosion could occur which may lead to signal loss. Connectors and headers may contain tin- or gold-plated conductors. Tin-plated conductors are housed in a black plastic casing and gold-plated conductors are housed in an orange plastic casing.
  • Page 38 9469300997 Figure 2-3. CEM-2020 Contact Input and Contact Output Terminals CEM-2020 DGC-2020HD...
  • Page 39 9469300997 Figure 2-4. CEM-2020H Contact Input and Contact Output Terminals CAN Interface These terminals provide communication using the SAE J1939 protocol and provide high-speed communication between the Contact Expansion Module and the DGC-2020HD. Connections between the CEM-2020 and DGC-2020HD should be made with twisted-pair, shielded cable. CAN interface terminals are listed in Table 2-2.
  • Page 40 The maximum bus length, not including stubs, is 40 m (131 ft). The J1939 drain (shield) should be grounded at one point only. If grounded elsewhere, do not connect the drain to the CEM-2020. DGC-2020HD Stub CAN-H AEM-2020 CEM-2020 (Optional) CAN-L 120 ohm 120 ohm...

  • Page 41: Logic Connections

    9469300997 2-11 Figure 2-7. Settings Explorer, System Parameters, Remote Module Setup Remote Contact Inputs Configuration Ten remote contact inputs provide additional sensing. The ten, identical inputs are designated CEM x Input #1 through CEM x Input #10 (where x = 1 to 4). Contact input logic connections are made on the BESTlogicPlus screen in BESTCOMSPlus and contact input operational settings are configured on the CEM x Inputs (where x = 1 to 4) settings screen in BESTCOMSPlus.
  • Page 42 2-12 9469300997 Operational Settings Remote contact input operational settings are configured on the CEM x Inputs (where x = 1 to 4) settings screen (Figure 2-15) in BESTCOMSPlus. Figure 2-9. Settings Explorer, Programmable Inputs, Remote Contact Inputs, CEM 1 Inputs Remote Contact Outputs Configuration A CEM-2020 provides 24 contact outputs and a CEM-2020H provides 18 contact outputs.

  • Page 43: Firmware Updates

    Repair Contact Expansion Modules are manufactured using state-of-the-art surface-mount technology. As such, Basler Electric recommends that no repair procedures be attempted by anyone other than Basler Electric personnel. Before returning the CEM-2020 for repair, contact Basler Electric Technical Services Department at 618- 654-2341 for a return authorization number.
  • Page 44 2-14 9469300997 CEM-2020 DGC-2020HD...
  • Page 45 9469300997 3 • VRM-2020 The Voltage Regulation Module (VRM-2020) is an optional remote device that communicates with the DGC-2020HD and provides excitation to the field of a brushless exciter. Features VRM-2020s have the following standard features: • Five pre-position setpoints for each control mode Internal tracking between AVR and FCR operating mode setpoints •...
  • Page 46 9469300997 Specifications Operating Power Configuration ........... Single-phase, PMG only Voltage Range ........150 to 300 Vac Frequency Range ........50 to 300 Hz Input Burden ..........517 VA (at 3.5 Adc excitation output) THD (total harmonic distortion) ....40% Control Power Nominal ...........

  • Page 47: Regulatory Standards

    HALT (Highly Accelerated Life Testing) HALT is used by Basler Electric to ensure that our products provide the user with many years of reliable service. HALT subjects the device to extremes in temperature, shock, and vibration to simulate years of operation, but in a much shorter period.
  • Page 48 Complies with NFPA Standard 110, Standard for Emergency and Standby Power Maritime Recognition American Bureau of Shipping (ABS) – For current certificates, see www.basler.com. China RoHS The following table serves as the declaration of hazardous substances for China in accordance with PRC standard SJ/T 11364-2014.
  • Page 49 Inspect for damage, and if there is evidence of such, immediately file a claim with the carrier and notify the Basler Electric regional sales office, your sales representative, or a sales representative at Basler Electric, Highland, Illinois USA.

  • Page 50: Terminals And Connectors

    9469300997 Terminals and Connectors VRM-2020 connections are dependent on the application. Incorrect wiring may result in damage to the module. Notes Control power from the battery must be of the correct polarity. While reverse polarity will not cause damage, the VRM-2020 will not operate.

  • Page 51: Operating Power

    9469300997 Operating power Operating power terminals accept 150 to 300 Vac from a single-phase PMG. Operating power terminals are listed in Table 3-2. It is required that a 5 A fuse be added for additional protection in line with the wiring to the power input of the VRM-2020.
  • Page 52 9469300997 Table 3-6. RTD Input Terminals Terminal Description A1, A2, A3 RTD Input #1 connections B1, B2, B3 RTD Input #2 connections C1, C2, C3 RTD Input #3 connections D1, D2, D3 RTD Input #4 connections E1, E2, E3 RTD Input #5 connections F1, F2, F3 RTD Input #6 connections G1, G2, G3...
  • Page 53 9469300997 VRM-2020 BLACK Jumper Figure 3-4. Two-Wire RTD Connections VRM-2020 BLACK BLACK Figure 3-5. Three-Wire RTD Connections CAN Interface Figure 3-6 illustrates CAN interface connections with the VRM-2020 providing one end of the bus. Figure 3-7 illustrates CAN interface connections with the DGC-2020HD providing one end of the bus. Note If the VRM-2020 is providing one end of the J1939 bus, a 120 Ω, ½...

  • Page 54: Cross-Current Compensation

    3-10 9469300997 AEM-2020 DGC-2020HD (Optional) Stub CAN-H CEM-2020 VRM-2020 (Optional) CAN-L 120 ohm 120 ohm P0081-48 Termination Termination Figure 3-6. CAN Interface with VRM-2020 Providing One End of the Bus AEM-2020 VRM-2020 (Optional) Stub CAN-H CEM-2020 DGC-2020HD (Optional) CAN-L 120 ohm...

  • Page 55: Power Inputs

    LED on the VRM-2020 flashes to indicate that the VRM-2020 is powered up and functioning properly. The LED lights solid during power up. When the power-up sequence is complete, this LED flashes. If the LED does not flash after power up, contact Basler Electric. Operating power Operating power from a PMG is applied at terminals 3 and 4.
  • Page 56 3-12 9469300997 Regulation The VRM-2020 receives control signals from the DGC-2020HD to supply excitation power. Stable regulation is enhanced by the automatic tracking of the active-mode setpoint by the inactive regulation mode. Pre-position setpoints within each regulation mode enable the VRM-2020 to be utilized for multiple system and application needs.

  • Page 57: Can Communication

    9469300997 3-13 Two styles of overexcitation limiting are available: Summing Point or Takeover. These are described under Configuration, Overexcitation Limiter below. Underexcitation Operating a generator in an underexcited condition can cause the stator end iron to overheat. Extreme underexcitation may lead to a loss of synchronism. The underexcitation limiter (UEL) senses the leading var level of the generator and limits decreases in excitation to limit end-iron heating.
  • Page 58 3-14 9469300997 number for the unit to be configured can be entered into BESTCOMSPlus to enable configuration of the required settings. The BESTCOMSPlus VRM Settings, Style Number screen is illustrated in Figure 3-10. Figure 3-10. Settings Explorer, VRM Settings, Style Number Field Rated Data For proper excitation control and protection, the DGC-2020HD must be configured with the ratings of the field.
  • Page 59 9469300997 3-15 Figure 3-12. Settings Explorer, VRM Settings, Startup AVR Mode Configuration BESTCOMSPlus Navigation Path: Settings Explorer, VRM Settings, AVR Configuration Front Panel Navigation Path: Settings Explorer > VRM Control Settings > AVR Setpoints When operating in AVR (Automatic Voltage Regulation) mode, the DGC-2020HD regulates the excitation level in order to maintain the generator terminal voltage setpoint despite changes in load and operating conditions.
  • Page 60 3-16 9469300997 constants selected from the gain option list. (The default value for the exciter time constant is the generator time constant divided by six.) Additional settings are available to remove the effects of noise on numerical differentiation (AVR derivative time constant Td) and set the voltage regulator gain level of the PID algorithm (Ka). Custom Stability Settings Stability tuning can be tailored for optimum generator transient performance.
  • Page 61 9469300997 3-17 ���� = ���� + ���� The new line drop adjusted setpoint is calculated using Equation 3-4. �������������������������������� ������������������������ ���� ���� ������������������������ ���� ���� ������������������������ Equation 3-4. Line Drop Adjusted Setpoint Cross Current Compensation Cross-current compensation (reactive differential) mode serves as a method of connecting multiple generators in parallel to share reactive load.
  • Page 62 3-18 9469300997 Figure 3-13. PID Calculator Kp – Proportional Gain: Read-only, calculated gain value. Ki – Integral Gain: Read-only, calculated gain value. Kd – Derivative Gain: Read-only, calculated gain value. T’do – Gen. Time Constant: Select a value within the range of 1 to 15 seconds. Te –...
  • Page 63 9469300997 3-19 Figure 3-14. Auto Tuning Window PID Design Mode: Set to either Pole Zero Cancellation or Pole Placement. Power Input Mode: Set to either PMG External or Shunt. Start Auto Tune Button: Begins the auto tuning process. Save PID Gains Button: Saves the calculated PID gains. Operational Settings The BESTCOMSPlus AVR Configuration settings screen is illustrated in Figure 3-15.
  • Page 64 3-20 9469300997 Figure 3-15. Settings Explorer, VRM Settings, AVR Configuration FCR Mode Configuration BESTCOMSPlus Navigation Path: Settings Explorer, VRM Settings, FCR Configuration Front Panel Navigation Path: Settings Explorer > VRM Control Settings > FCR Setpoints When operating in FCR (Field Current Regulation) mode, the DGC-2020HD regulates the level of current it supplies to the field based on the FCR setpoint.
  • Page 65 9469300997 3-21 input on the DGC-2020HD. When the appropriate contact input is closed, the setpoint is driven to the corresponding pre-position value. Each pre-position function has two settings: Setpoint and Adjust Rate. The setting range of each pre-position setpoint is identical to that of the corresponding control mode setpoint.

  • Page 66: Overexcitation Limiter

    3-22 9469300997 Overexcitation Limiter BESTCOMSPlus Navigation Path: Settings Explorer/VRM Settings/Limiters/OEL Front Panel Navigation Path: Settings Explorer > VRM Control Settings > Limiters > OEL Operating in the overexcited region of a generator’s capability curve can cause excessive field current and field winding heating. The overexcitation limiter (OEL) monitors the level of field current supplied by the VRM-2020 and limits it to prevent field overheating.
  • Page 67 9469300997 3-23 The offline, low-level OEL threshold is determined by the Low Level setting. When the excitation level is below the Low Level setting, no action is taken by the DGC-2020HD. The generator is permitted to operate indefinitely with this level of excitation. Online Operation The online, low-level OEL threshold is determined by the low-level setting.
  • Page 68 3-24 9469300997 MOP = multiple of pickup <1.03, 205> Figure 3-20. Inverse Time Characteristic for Takeover OEL OEL Takeover Configuration Several settings are provided for tuning takeover OEL: integral gain, loop gain, Ifd filter constant, activation delay, and hysteresis. The integral gain (Ki) adjusts the rate at which the VRM-2020 responds during an overexcitation condition.

  • Page 69: Underexcitation Limiter

    9469300997 3-25 Takeover OEL settings are illustrated in Figure 3-21. Figure 3-21. Settings Explorer, VRM Settings, Limiters, OEL, OEL Takeover Underexcitation Limiter BESTCOMSPlus Navigation Path: Settings Explorer/VRM Settings/Limiters/UEL Front Panel Navigation Path: Settings Explorer > VRM Control Settings > Limiters > UEL Operating a generator in an underexcited condition can cause the stator end iron to overheat.
  • Page 70 3-26 9469300997 UEL settings are illustrated in Figure 3-22 and Figure 3-23. Figure 3-22. Settings Explorer, VRM Settings, Limiters, UEL, UEL Configure Figure 3-23. Settings Explorer, VRM Settings, Limiters, UEL, UEL Custom Curve Curve Selection: Select Internal or Customized. Internal Curve: Enter number to adjust range of y axis. Custom Curve: Set five curve data points as needed.
  • Page 71 9469300997 3-27 The underfrequency limiter is selectable for underfrequency limiting or volts per hertz limiting. These limiters protect the generator from damage due to excessive magnetic flux resulting from low frequency and/or overvoltage. If the generator frequency decreases below either of the two corner frequencies for the configured underfrequency slopes (Figure 3-24), the DGC-2020HD adjusts the voltage setpoint so that the generator voltage follows the underfrequency slopes.

  • Page 72: Auto Tracking

    3-28 9469300997 110 % 100 % P0004-33.vsd 12-03-01 Nominal 0 Hz GENERATOR FREQUENCY Figure 3-25. Typical 1.1 PU Volts per Hertz Limiter Curve Underfrequency Volts/Hz Disable When true, the UNDERFREQUENCY_VHZ_DISABLE logic block disables the Volts/Hz limiter. Refer to the BESTlogicPlus chapter in the Configuration manual for more information. Figure 3-26.

  • Page 73: Troubleshooting

    Repair VRM-2020s are manufactured using state-of-the-art surface-mount technology. These components are encased in potting material. As such, Basler Electric recommends that no repair procedures be attempted by anyone other than Basler Electric personnel. Before returning the VRM-2020 for repair, contact Basler Electric for a return authorization number.
  • Page 74 3-30 9469300997 Step 3: Check for correct input power to the VRM-2020. Refer to the Specifications section in this chapter for input power requirements. If voltage is not present, refer to the generator manual for repair procedures. If voltage is present, proceed to Step 4. Step 4: Verify that no fuses are open.
  • Page 75 9469300997 3-31 If the overexcitation limiter is active, check the generator and/or load conditions. Also check the Field Current Limit setpoint for the correct level. Interrupt input power or shut down the generator for a minimum of one minute. If the overexcitation limiter is not active, proceed to Step 7. Step 7.
  • Page 76 DGC-2020HD / VRM-2020. If the exciter field voltage requirements are not compatible with the DGC-2020HD / VRM-2020, contact Basler Electric Customer Service for recommendations. If the exciter field voltage requirements are compatible with the DGC-2020HD / VRM-2020, proceed to Step 3.
  • Page 77 DGC-2020HD / VRM-2020. If the generator exciter field current requirements are not compatible with the DGC-2020HD / VRM-2020, contact Basler Electric Technical Sales Support for recommendations. If the generator exciter field current requirements are compatible with the DGC-2020HD / VRM-2020, proceed to Step 5.
  • Page 78 3-34 9469300997 Underfrequency Active Indicator is Annunciating Step 1. Verify that the generator is operating at rated speed. If the generator is not operating at rated speed, adjust the generator speed. If the generator is operating at the rated speed, proceed to Step 2. Step 2.
  • Page 80 Highland, Illinois USA Suzhou, P.R. China Tel: +1 618.654.2341 Tel: +86 512.8227.2888 Fax: +1 618.654.2351 Fax: +86 512.8227.2887 email: info@basler.com email: chinainfo@basler.com...

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