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SCE -AC8500B120V User Manual

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Table of Content SCE-AC8500B120V
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Summary of Contents for SCE SCE-AC8500B120V

  • Page 1: Table Of Contents

    Table of Content SCE-AC8500B120V 1. User manual ..........................2. Legal regulations ......................... 3. Safety instructions ........................4. Application ............................ 5. Functional principle ........................6. Technical data ..........................7. Performance graph ........................8. Mounting ............................9. Mounting Principle ........................10. Cut Out Dimension ........................

  • Page 2: User Manual

    1. User manual This instruction manual contains information and instructions to enable the user to work safely, correctly and economically on the unit. Understanding and adhering to the manual can help one: Avoid any dangers. Reduce repair costs and stoppages. Extend and improve the reliability and working life of the unit.

  • Page 3: Legal Regulations

    2. Legal regulations Liability The information, data and instructions contained in this instruction manual are current at the time of going to press. We reserve the right to make technical changes to the unit in the course of its development. Therefore, no claims can be accepted for previously delivered units based on the information, diagrams or descriptions contained in this manual.

  • Page 4: Safety Instructions

    3. Safety instructions Upon delivery the unit is already meeting current technical standards and can therefore be safely taken into operation. Only authorised personnel is allowed to work on the unit. Unauthorised personnel must be prohibited from working on the unit. Operating personnel must inform their superiors immediately of any malfunction of the unit.

  • Page 5: Application

    4. Application The cooling unit is intended to be used as a complementary accessory to larger industrial equipment. The unit is used where heat needs to be dissipated from electrical control cabinets or similar enclosures in order to protect heat sensitive components. It is not intended for household use. The unit has two completely separate air circuits which ensure that the clean cabinet air does not come into contact with the ambient air which may well be dirty or polluted.

  • Page 6: Functional Principle

    5. Functional principle The cooling unit for enclosures works on the basis of a refrigeration circuit consisting of four main components: compressor (1), evaporator (2), condenser (3) and expansion device (4). The circuit is hermetically sealed and R 513A refrigerant circulates inside it (R 513A is chlorine free and has an Ozone Destruction Potential [ODP] of 0 and a Global Warming Potential [GWP] of 630).

  • Page 7: Technical Data

    6. Technical data Order Number SCE-AC8500B120V Cooling capacity L35L35 (EN14511-3) 8,530 BTU 1.97 kW @ 50 Hz Cooling capacity L35L50 (EN14511-3) 2.04 kW @ 60 Hz Enclosure heater 1500 W Compressor type Rotary piston compressor Refrigerant / GWP R 513A / 630 Refrigerant charge 1158 g / 40.8 oz.

  • Page 8: Performance Graph

    7. Performance graph Version No. 1-6 - 27.11.2024 Doc. No. 99572611201SG 8 / 25...

  • Page 9: Mounting

    8. Mounting The power supply rating on unit rating plate must comply with mains rating. Always disconnect the power supply before opening the unit. The heat load to be dissipated from enclosure should not exceed specific cooling output of the unit at any condition.

  • Page 10: Mounting Principle

    9. Mounting Principle Do not use within the first 15 minutes after installation! Use only the supplied mounting hardware Tighten Screws to 4.5 Nm Ensure the mounting surface does not warp after assembly and reinforce it if necessary The bracket helps with the mounting of the cooling unit during installation Screws Toothed washers Flat washers...

  • Page 11: Cut Out Dimension

    10. Cut Out Dimension Version No. 1-6 - 27.11.2024 Doc. No. 99572611201SG 11 / 25...

  • Page 12: Dimension (H X W X D)

    11. Dimension (H x W x D) Version No. 1-6 - 27.11.2024 Doc. No. 99572611201SG 12 / 25...

  • Page 13: Electrical Connection

    12. Electrical Connection Caution, risk of death Unconnected and / or faulty protective conductor systems can lead to dangerous voltages and electric shocks which can cause serious accidents. Work on electrical connections may only be carried out by trained electrical engineers. Door Switch The unit can be switched ON and OFF via a door contact switch.

  • Page 14: Controller

    13. Controller When started, the display shows the internal temperature of the cooling unit and serves as the home menu for control. Buttons LED Functions ◻ Menu Blue LED: Steady On - Cooling mode ◯ Set Blue LED: Blinking - min. compressor off time not elapsed Red LED: Steady On - Heating mode (opt.) △...
  • Page 15 All parameters are sorted in 3 separate menus. Menu 1 Parameter Description Range Sbrd Onboard sensor Reading S1 Sensor Reading S2 Sensor Reading 0: Open Digital Input 1 reading 1: Closed 0: Open Digital Input 2 reading 1: Closed AL1 - AL10 Alarms Counters for Alarm 1 to Alarm 10, (alarm description Alarm counts up to is described in table Alarm Codes below) 250 per alarm...
  • Page 16 Menu 3 Parameter Description Input Setting range Any number between Modbus Address △ or ▽ to increase or decrease Modbus address 1 and 254 0: Unlocked SLoc Setpoints Lock △ or ▽ to change between Locked/Unlocked 1: Locked Any number between CPSS Change Password △...
  • Page 17 Master / Slave and Redundancy Functionality i) Master / Slave Mode - Specifications Network of maximum 10 units. The Modbus addresses of the units need to be set manually. Unit addresses need to be between 1 and 10. The Master unit must be set with Address 1. When setting a master, an extended menu opens to set the Master/Slave and Redundancy modes.

  • Page 18: Master Settings

    Master settings Display Description Master On/Off Master Modes: None, Identical, Power Power Mode Delta Temperature MS2: Master Modes None: All units are Independent of each other. Each unit operates using its own setpoint and its own Internal Temperature. The Master still communicates with the Slave units to gather information in case information needs to be communicated to the Gateway.
  • Page 19 ii) Redundancy Mode Redundancy settings Display Description Redundancy Modes: None, Mode A, Mode B Start-up Mode Changeover Timeout in Minutes RS1: Redundancy Modes: None: No redundancy, all units operate normally Mode A: In this mode, there will be 2 sets of units, and they will toggle between each other after a pre-defined time. The start-up units are settable.

  • Page 20: Modbus Communication

    Setting rS3, Changeover Timeout, indicates the duration of each cycle. This can be a value from 1 to 9999 minutes. If a Slave needs to execute heating mode, Redundancy operation is ignored. If the Master needs to execute heating mode, the Slaves will keep operating based on the Redundancy Algorithm.

  • Page 21: Wiring Diagram

    14. Wiring Diagram Power connector Signal connector Alarm (NC) Alarm (COM) Alarm (NO) Door contact Door contact RS 485 connector Version No. 1-6 - 27.11.2024 Doc. No. 99572611201SG 21 / 25...

  • Page 22: Taking Into Operation

    15. Taking into Operation Attention! The unit can be damaged by lack of lubricant. To ensure that the compressor is adequately lubricated the oil, which has been displaced during transport, must be allowed to flow back into it. The unit must therefore be allowed to stand for at least 30 min.

  • Page 23: Trouble Shooting

    16. Trouble Shooting Failure Condition Cause Solution Internal fan does not work Power not connected. Verify power supply Enclosure temperature is below Verify values of parameter setting temperature (St or Ct_S) "St" or Ct_S Internal fan works, external fan Unit and compressor don't work Door switch contact is open Verify door switch...

  • Page 24: Transport & Storage

    18. Transport & Storage Malfunction due to transport damage On delivery the carton box containing the unit must be examined for signs of transport damage. Any transport damage to the carton box could indicate that the unit itself has been damaged in transit which in the worst case could mean that the unit will not function.
  • Page 25 Cable gland M20 * 1.5 Lock nut M20 * 1.5 Supply plate Saginaw Control and Engineering 95 Midland Road Saginaw, MI 48638 Phone: 989 / 799-6871 Fax: 989 / 799-4524 sce@saginawcontrol.com Version No. 1-6 - 27.11.2024 Doc. No. 99572611201SG 25 / 25...

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