Danfoss CCM Data sheet

Data Sheet

Electric regulating valve
Type CCM

Expansion and gas bypass valve for CO

2

The CCM is an electrically operated valve
designed specically for operation in CO

systems. The valve is capable of functioning
both as an expansion valve, and as a gas bypass
valve with back-pressure regulation in
subcritical applications.

The pressure rating allows for operation in
environments where system standby capability
is required without the need for auxiliary
cooling systems during servicing or power
outages.

Features:

• Up to 90 bar (1305 psi) working pressure to
accomodate CO2 system pressures during

standstill conditions.

• Precise positioning for optimal control of
intermediate pressures in transcritical CO

systems or liquid injection in heat
exchangers.

• MOPD up to 50 bar (725 psi).

• Combined stainless steel butt weld/solder
connections for installation in copper piped
systems (K65 alloy or standard) as well as
steel piped systems.

• Standard M12 connector for simple and
exible connection to the motor driver.

• For manual operation and service of the CCM
an AST-g service driver is available. For further
information please contact Danfoss
(Commercial Refrigeration and Air
Conditioning Controls).

• UL recognized.

2

2

AI213386426013en-000601

From cases

AKS
2050

AKS 2050

EKC
326A

ICMTS

To cases

CCM

Danfoss

R64-2046.11

CCM

AKS 33

AKS 11

EKC 316A

EVR

GBC

GBC

Electric regulating valve, type CCM

Applications

The CCM can be used in a variety of applications within CO2 refrigeration systems. Typically it is used as a gas bypass
valve in a transcritical CO2 booster system or as an expansion valve.

Figure 1: Application 1

A gas bypass valve is typically used to regulate the intermediate pressure in a transcritical CO2 refrigeration system.
By venting ashgas generated after the transcritical expansion, the pressure can be kept at a safe level for all
components situated in the liquid lines of a transcritical CO2 system. For use in the gas bypass application the
EKC326A controller is recommended.

Figure 2: Application 2

A liquid expansion valve is typically used for injection in plate heat exchangers of CO2/CO2 cascades, or as an
expansion valve for CO2 evaporators. For the liquid injection applications CCM is used with EKC 316A controller.

© Danfoss | Climate Solutions | 2021.03 AI213386426013en-000601 | 2

Parameter

CCM

Compatibility

R744

MOPD

50 bar (725 psi)

Max. working pressure (PS/MWP)

90 bar (1305 psi)

Refrigerant temperature range

(1)

–40°C to 60°C (–40°F to 140°F)

Ambient temperature

–40°C to 60°C (–40°F to 140°F)

Material of construction

Stainless steel

Parameter

CCM

Motor enclosure

IP 67

Stepper motor type

Bi-polar - permanent magnet

Step mode

2 phase full step

Phase resistance

52Ω ±10%

Phase inductance

85 mH

Holding current

Depends on application
Full current allowed (100% duty cycle)

Step angle

7.5° (motor),

0.9° (lead screw),
Gearing ration 8.5:1. (38/13)2:1

Nominal voltage

(Constant voltage drive) 12 V dc -4% +15%, 150 steps/sec.

Phase current

(Using chopper drive) 100 mA RMS -4% +15%,

Max. total power

Voltage / current drive: 5.5 / 1.3 W (UL: NEC class 2)

Step rate

150 steps/sec. (constant voltage drive)
0-300 steps/sec. 300 recommended (chopper current drive)

Total steps

CCM 10, 20, 30
CCM 40

2625 [+160 / -0] steps
3530 [+160 / -0] steps

Total stroke

13 mm / 16 mm (0.5 in. / 0.6 in.)

Full travel time

CCM 10, 20, 30
CCM 40

17 / 8.5 sec. (voltage / current)
23 / 11.5 sec. (voltage / current)

Lifting height

CCM 10, 20, 30
CCM 40

13 mm (0.5 in.)
16 mm (0.6 in.)

Reference position

Overdriving against the full close position

Electrical connection

4 wire 0.5 mm

2

(0.02 in2), 0.3 m (1 ft) long cable

Electric regulating valve, type CCM

Product specication

Technical data

Table 1: Technical data

(1)

(1)

Measured at inlet of the valve

Measured at inlet of the valve

Electrical data

Table 2: Electrical data

© Danfoss | Climate Solutions | 2021.03 AI213386426013en-000601 | 3