CPMW1000 Integrated Meter Guide

ChargePoint® Networked Charging Station

CPMW1000 Integrated Meter

The CPMW1000 Integrated Meter is a multifunctional and bi-directional meter intended for use in the field of e-mobility. It is a DC meter capable of 1000 A and 1000 V maximum. The metering device and display unit are supplied by 48 V DC on the left side (top view). If this supply is not provided, the meter doesn’t measure energy.

To operate the meter, the display unit and the meter shall be specially configured in meter mode. This specially configured meter mode can only be set by certified ChargePoint personnel and is not available once the meter is installed in it's final location (approved EV Electric Vehicle charger from ChargePoint).

When working in meter mode, the display unit (which is also used by the charger) only shows two orange buttons, “Port 1” and “Port 2”. Clicking on one of these buttons connects the display to the meter units, and shows the proper meter display containing serial number, software hashes and the register entry.

The CPMW1000 Integrated Meter is available in two configurations:

• Two Neutrons and one Falcon (as illustrated above)

• One Neutron and one Falcon

The Falcon display will show the energy meter register. When charging, the energy meter register refresh ratio will be 10s.

Installation

The CPMW1000 Integrated Meter is built into Power Link 2000 charging stations. All components are powered by 48 V DC and will be connected to the Power Path assembly, which consists of a metal backplate and input current bus bars and protection devices. Those bus bars then connected to the station input DC power and the output on the top of the Neutron is directly connected to the cable assembly. The installation seal is digital and broken when the station front door is opened. A lockout will be triggered and a charging session isn’t possible without interaction of trained personnel (secured by a code).

(a) Neutron (meter)

(b) Falcon (display)

Metering Logic

CPMW1000 Integrated Meter current is measured using a shunt and is transmitted to a micro controller. Voltage is measured using a ground referenced measurement before it is transformed to a micro controller.

At the internal sample rate of 100 Hz, V*I is accumulated. At energy update rate, the accumulated V*I values are converted to energy.

Fault Detection

In "meter mode" the operating faults have no effect on operations. The only faults that will prevent operation lead to the meter display not being shown at all. Examples for this are wrong bootup, wrong firmware or that the Neutron is not provisioned in meter mode.

If these failures do occur, the meter must be disconnected from the main power supply by a certified ChargePoint technician. The hardware needs to be replaced.

When the meter is operating within an EV Electric Vehicle Charger it has the capacity to perform other functions other than measuring energy. The entire functionality can be found in the Operation and Maintenance guide of the EV Electric Vehicle charger.

Dimensions

Refer to the illustrations below for CPMW1000 Integrated Meter dimensions.

Neutron

Falcon

Meter Information Display

There are two meter display information:

The MID Measuring Instruments Directive meter Information Display when the system is working on Metering Mode:

Once the meter is fully tested and calibrated it will be installed within the Electric Vehicle Supply system. The charger shares the same display with the meter. However the “metering mode” is now disabled and instead a proper menu will be displayed. To see the MID Measuring Instruments Directive meter energy register, navigate through the menu to “energy meter"

MID Type Label

The MID Measuring Instruments Directive type label can be located in the area marked (a) below.

The MID Measuring Instruments Directive label includes the following:

(a) Customer logo

(b) Manufacturer

(c) Type Approval Name

(d) Technical Specifications

(e) Minimum Measured Quantity (kWh)

(f) Impulse voltage (kV)

(g) Voltage supply (VDC)

(h) LED pulse constant (imp/kWh)

(i) Meter accuracy Class

(j) Manufacturer address

(k) Serial Number

(l) CE marking, year of manufacturing, MID Measuring Instruments Directive metrology marking, number of notified body and MID Measuring Instruments Directive certificate number

(m) Bi-directional symbol

(n) Manufacturing QR Quick Response code

(o) WEEE recycle symbol

(p) Manual symbol

Data Protection

The energy data is computed and stored inside a micro controller. The micro controller does not provide a mechanism for accessing this data other than via the meter firmware. The meter firmware does not provide a mechanism for updating the energy data from an external interface. The meter firmware can be updated during production or if the seal is removed, but a secure boot mechanism is used to prevent unsigned and unauthorized firmware.

Physical sealing between meter and display is not necessary since each display is digitally sealed with its Neutron or group or pair of Neutrons.

Components of the CPMW1000 have self destructive tamper proof labels applied by the manufacturer in several locations on the Neutron (a) and Falcon (b). The label includes the following message:

VOID IF REMOVED OR DESTROYED

If your meter has a broken label, contact your local ChargePoint operator to investigate the root cause.

In addition to the physical tamper proof sealing, and the digital pair between display and meter, the door of the charging station has a digital user seal which is “broken” when the station front door is opened. A lockout will be triggered and a charging session isn’t possible without interaction of trained personnel (secured by a code).

Main Connectors

(a) Positive (+) output main connector

(b) Negative (-) output main connector

(c) Pulse LED

(d) Positive (+) input main connector

(e) Negative (-) input main connector

(f) CAN bus

(g) 48 V DC supply

Connections

Component	Connector	Terminal	Function	Component	Connector	Terminal	Function
Meter A	J2	1	+48 VDC	Meter B	J2	1	+48 VDC
		2	0 VDC			2	0 VDC
		3	GND Ground/Chassis			3	GND Ground/Chassis
		4	GND Ground			4	GND Ground
		5	Meter_LED_OUT			5	Meter_LED_OUT
		6	Meter_LED_RTN			6	Meter_LED_RTN
	J6	1	Jumper		J6	1	Jumper
		2	CAN-H			2	CAN-H
		3	CAN-L			3	CAN-L
		4	-			4	-
		5	-			5	Jumper
		6	-			6	-
		7	Jumper			7	Jumper
		8	-			8	-
		9	-			9	-
		10	-			10	-
		11	-			11	Jumper
		12	-			12	-
Falcon	J2	1	+48VDC	FDC Board	J7	1	+48VDC
		2	GND Ground/Shield			2	+48VDC
		3	GND Ground			3	+48VDC
	J8	1	Shield			4	+48VDC
		2	CAN-H			5	Chassis
		3	CAN-L			6	GND Ground
		4	-			7	GND Ground
		5	Jumper			8	GND Ground
		6	Jumper			9	GND Ground
		7	-			10	Chassis
		8	-		J15	1	CAN-H
		9	-			2	CAN-L
		10	-			3	Chassis
		11	-			4	CAN-H
		12	-			5	CAN-L
		13	-			6	GND Ground
		14	-			7	CAN-H
		15	-			8	CAN-L
		16	-			9	Chassis
						10	GND Ground

Technical Specifications

Product Standards:

CPMW1000 Integrated Meter complies with the following standards:

EN 50470-4:2022

IEC 62052-11:2020

Electrical Specifications

Component	Specifications
Power	Aux Power supply 48 V DC
Power Consumption	<10 W
Ist	0.48 A
Imin	6 A
Itr	12 A
Iref	120 A
Imax	600 A
Un	100 to 1000V
Accuracy class	Active energy: Class B (EN50470-4)
Pulse constant	2000 imp/kWh Proportionate to measured active energy (EN62052-31)
Minimum measurable quantity of energy (MMQ)	1 kWh

Environmental Specification

Components	Specifications
Working temperature	-25 oC to 70 oC
Storage temperature	-40 oC to 80 oC
Mechanical environment	Class M1 - 2014/32/EU - Measuring Instrument Directive Class M1 - UK SI2016 No. 1153 - Measuring Instruments Regulations
Electromagnetic environment	Class E2
Application field	Meter built in IP54 enclosure
Electrical protection	Class I
Storage and operating humidity	5% - 95% RH at 50 oC, non-condensing for up to two years
Protection grade	IP00 Meter shall be installed within (minimum) IP54 enclosure