Emerson Copeland Scroll™ ZB Series Large Refrigeration Compressors
Emerson is a leading compressor manufacturer committed to maximizing system efficiency and protecting the environment, offering a wide range of solutions for commercial refrigeration. The Copeland Scroll™ ZB Compressor is recognized for its reliability and low running cost in high and medium temperature applications. The newly released ZB large refrigeration scroll compressor expands the ZB product line to 30 HP, optimized for medium temperature applications for best-in-class seasonal energy efficiency. These compressors offer an excellent solution for replacing traditional semi-hermetic compressors and leading the transition to scroll technology.
Key Features and Benefits
- Copeland Scroll axial and radial compliance for superior reliability and efficiency.
- Wide operating range from -20°C to 10°C, covering a minimum condensing limit of 10°C.
- Advanced scroll and motor temperature protection through external modules for higher reliability.
- Qualified for multiple refrigerants including R404A, R22, R134a, R407A/C/F.
- Low vibration, reducing refrigerant leaks in the system.
- Compact design and lightweight, up to 20% weight reduction compared to equivalent semi-hermetic compressors.
- High seasonal efficiency as scrolls and motors are optimized for medium temperature applications, offering the best life cycle cost solution.
Product Specifications (R22 and R404A)
This catalog primarily provides product specifications for R22 and R404A. For more product information, please visit the Selection Software Asia.
Notes: Ratings are based on medium temperature cold room conditions: -10°C evaporating, 45°C condensing, 20°C return gas, 0K sub-cooling.
Performance Data
Performance curves (TEC / TE7) are available, illustrating compressor characteristics across various operating conditions.
Model Availability
Compressors are available with different connection types:
- ZB130KQ/KQE: Brazing (BOM 550), Rotalock (BOM 551)
- ZB150KQ/KQE: Brazing (BOM 522), Rotalock (BOM 523)
- ZB190KQ/KQE, ZB220KQ/KQE: Brazing (BOM 522), Rotalock (BOM 523)
Note: Model 120 is not available.
External Protection Module Introduction
Emerson scroll compressors utilize external protection modules for enhanced reliability and diagnostics.
CoreSense™ Communications Module (e.g., ZB130KQE-TED)
The CoreSense™ module, installed in the compressor electrical box, provides advanced diagnostics, protection, and communications. Compressors equipped with CoreSense have an "E" in the electrical code (e.g., ZB130KQE-TED).
Key Features:
- Motor temperature protection
- Missing phase protection
- Reverse phase protection
- Low control circuit voltage protection
- Short cycling detection and alert
- Communication via RS485/Modbus to system controller
- Storage of operational history, runtime information, and fault counters
- Status, warning, and alert information display via LEDs
The module offers a proprietary lockout feature to prevent damage based on fault severity. Less severe faults may cause occasional trips without lockout.
LEDs communicate status, warning, and alert codes.
CoreSense Communications Module Specifications:
| Parameter | Specification |
|---|---|
| Module Part Number | 57517-10-006046-40-606 |
| Power Supply & Frequency | 120-240 VAC 60Hz, 115-230 VAC 50Hz |
| Allowable Voltage Range | 85-252 VAC |
| T2/T1 Low Voltage Trip | < 85 VAC |
| T2/T1 Low Voltage Reset | > 95 VAC |
| Power Consumption | 2.5 VA Max |
| M1-M2 Contact Rating | 5A Max |
| Motor Temperature Trip Resistance | > 4.5 KΩ |
| Open Motor Thermistor Trip Resistance | > 2.75 KΩ |
| Shorted Motor Thermistor Trip Resistance | < 0.4 KΩ |
| Motor Temperature Reset Resistance | < 2.75 KΩ |
| Reset Time After Trip | 30 minutes |
| Ambient Temperature Range | -40°C to +65°C |
Terminal Designations:
- T2-T1: Module power supply (120-240 VAC 60Hz, 115-230 VAC 50Hz).
- L1-L2-L3: Phase inputs for compressor power.
- M2-M1: Normally open control circuit contacts; wire in series with the compressor contactor.
- A (-), GND, B (+): RS485 communications.
- Temperature Plug: PTC and common connections.
DIP Switch Configuration (ZB130):
DIP switches configure Modbus address, baud rate, parity, and operating conditions.
| DIP Switch Number | Purpose | On | Off |
|---|---|---|---|
| 1-5 | Modbus Module Address | Configurable | |
| 6 | Baud Rate | 19200 | 9600 |
| 7 | Parity | No Parity | Even Parity |
| 8 | Network Mode | Stand Alone | Network |
| 9 | PTC Thermistor Configuration | PTC only (2 wire) | N/A |
| 10 | Short Cycle Protection | Enable | Disable |
Note: Module requires reset after changing DIP switch settings. Default factory settings are for standalone operation with switch 1 ON and others OFF. Incorrect settings may disable protection features.
Kriwan Protection Module (ZB150-ZB220)
ZB150-ZB220 compressors use a Kriwan protection module (INT69SC2) for electronic motor protection, utilizing thermistors (PTC-resistance) embedded in motor windings to monitor temperature.
Kriwan Protection Module Specifications:
| Parameter | Specification |
|---|---|
| Module Part Number | 071-0684-00 |
| Type | Kriwan Diagnose INT69 SC2 |
| Protection | Motor & Scroll Temperature Protection |
| Power Supply & Frequency | 120-240 VAC, 60Hz; 115-230 VAC, 50Hz |
| Power Consumption | 3 VA |
| M1-M2 Contact Rating | 2.5A Max |
| Trip resistance | >4.5K Ω |
| Reset resistance | <2.75K Ω |
| Reset time After Trip | 30 minutes |
| Ambient temperature range | -30°C to +70°C |
Terminal Designations:
- T2-T1: Module power supply (120-240 VAC 60Hz, 115-230 VAC 50 Hz).
- S2-S1: Connect to motor and scroll PTC sensors.
- M2-M1: Normally open control circuit contacts; wire in series with the compressor contactor.
Discharge Temperature Protection:
- ZB130 includes an ASTP device for high temperature protection.
- ZB150~ZB220 protection is provided by a thermistor probe in the discharge plenum. Excessive discharge temperature (e.g., 130°C) causes the electronic protector module to trip. The discharge gas thermistor is wired in series with the motor thermistor chain.
Safety Controls
Proper safety controls are essential for compressor and system protection.
Internal Pressure Relief (IPR) Valve
Copeland Scroll™ compressors (ZB130~ZB220) do not have internal pressure relief (IPR) valves. A high pressure control must be used in all applications to avoid abnormally high operating pressures.
If a discharge line shut-off valve is used, the high pressure control must be installed between the compressor discharge fitting and the valve. Compressors with rotalock discharge fittings have a connection on the fitting for the high pressure cut-out switch.
High Pressure Control
A high pressure cut-out control with a manual reset feature is recommended for maximum system protection.
Recommended High Pressure Cut-Out Settings:
| Refrigerant | Setting (bar(g)) |
|---|---|
| R22 | 25.4 |
| R404A | 27.4 |
| R134a | 22.3 |
| R407F | 23.9 |
Low Pressure Control
A low pressure control is highly recommended for loss of charge protection and other system fault conditions that may lead to very low evaporating temperatures. Loss of charge can result in compressor overheating and motor overload protector recycling, potentially causing oil pump out and bearing failure.
Recommended Low Pressure Cut-Out Settings:
| Refrigerant | Setting (bar(g)) |
|---|---|
| R22 | 2.3 |
| R404A | 2.0 |
| R134a | 0.6 |
| R407F | 1.5 |
Low pressure cut-out settings should be selected based on the application type and minimum expected evaporating temperature to prevent compressor overheating and system failure.
Contact Information
Emerson maintains a global presence. Key regional offices include:
- Hong Kong: Suite No. 2503-8, 25/F, Exchange Tower, 33 Wang Chiu Road, Kowloon Bay, Kowloon. Tel: (852) 2866 3108, Fax: (852) 2520 6227.
- Saudi Arabia: PO Box 34332 - 3620 Building 7874 Unit 1, 67th street 2nd Industrial City Dammam. Toll Free: 800 844 3426, Tel: +966 3 8147560, Fax: +966 3 8147570.
- Korea: 3F, The Pinnacle Gangnam, 343, Hakdong-ro, Gangnam-gu, Seoul 06060. Tel: (822) 3483 1500, Fax: (822) 592 7883.
- United Arab Emirates: Jebel Ali Free Zone PO Box 26382 Dubai. Toll Free: 800 441 3428, Tel: +971 4 811 8100, Fax: +971 4 886 5465.
- Vietnam: Level 6, Melinh Point Tower, 2 Ngo Due Ke, District 1, Ho Chi Minh City. Tel: (84) 908 009 189.
For the latest information and software, please visit Emerson's official channels.
