DVC70 Data Logger

DVC70 Data Storage Expansion Module

The DVC70 is a 5Mbyte data storage expansion module with a real-time clock. It has been designed to store data which can decrease warranty claims, define operator errors, pin-point manufacturing issues, and keep a complete history of the machines operation. The module holds up to 5Mbytes of non-volatile FLASH data. This data is safe even in the event of power loss. The DVC70 communicates to the DVC10 Controller through the CAN Bus and utilizes the RS-232 port for data monitoring and downloading. The controller is packaged in a small rugged enclosure and encapsulated to withstand extreme harsh environments. Two sealed connectors are provided for electrical connections.

How much data can I store in the DVC70?

FEATURES

· 5Mbytes of Memory Storage

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· Real-Time Clock: Time and date stamping.

· Controller Area Network (CAN 2.0B) provides high-speed serial communications.

· Rugged encapsulated enclosure withstands harsh environments commonly found in mobile applications.

· Module displays memory storage, real-time clock and communication status.

· RS-232 communication used for downloading data and node assignment.

· Rugged power supply operates over the full range 8.0Vdc to 32Vdc with reverse polarity protection and transient protection up to 1.5K Watts Peak Pulse Power Dissipation.

COMMUNICATIONS

A. The DVC70 has two communication ports:

1. Can Bus 2.0B – This port is used to communicate to the DVC10 Master Module. A DeviceNet protocol is used.

2. RS-232 serial port is used for:

a. Setting MAC ID and Baud Rate.

b. Monitoring and downloading data.

POWER SUPPLY

A. The DVC70 Power Input has the following features:

1. Range: +8.0Vdc to +32Vdc

2. Reverse polarity protection and transient protection up to 1.5K Watts Peak Pulse Power Dissipation

INDICATORS

A. DATA (Qty 1) (Green)

1. Flashes when data is being stored.

B. ALARM (Qty 1) (Green)

1. Flashes when data exceeds specified percentages.

C. CLK STATUS (Qty 1) (Green)

1. ON – Real-Time clock is set and keeping time/date.

2. Blinking – Real-Time clock has lost time/date. Need to be reset.

D. Module Status (MS) (Qty 1) (R/G)

1. Off – There is no power applied to the Module.

2. On green – The module is operating in a normal condition.

3. Flashing green – Device in standby state. May need commissioning.

4. Flashing red – Recoverable Fault.

5. On red – Module has an unrecoverable fault.

6. Flashing Red/Green – Device is in self-test.

E. Network Status (NS) (Qty 1) (R/G) –

1. Off - Device in not on-line.

2. Flashing green – Device in on-line but has not established connection to other nodes.

3. On green – Device in on-line and has established connection to other nodes.

4. Flashing red – One or more connections are in a timed-out state.

5. On red – The device has detected an error that has rendered it incapable of communicating on the network.

PACKAGING

A. Physical Size: 6.2L” x 4.75W” x 1.65H” encapsulated module.

B. Each module has two mounting holes 4.0” a part. Each mounting hole has an I.D. of 0.325”.

C. Weight: 1 lb. 6 oz.

Connector Kits or Mating Connector Assemblies with flying leads for Start-up applications

A. The DVC70 uses the Metri-Pack 150 series (or compatible) sealed electronic header designed for severe under-hood environments.

1. 18-pin Header

B. 5-pin CAN Bus (DeviceNet compliant) connector.

1. Pins are gold plated brass machined from solid stock.

2. Protection rating – Nema 1,3,4,6P, and IEC IP 68.

ENVIRONMENTAL

Operating Temperature: -40 Celsius to 85 Celsius

Storage Temperature: -40 Celsius to 85 Celsius

How much data can I store in the DVC70?

First, there are two modes that the DVC70 can capture data in. The Trend mode incorporates a timestamp to start, then trends the data per the sampling rate. The Event mode incorporates the addition of a timestamp with every sampling. Also, The Trend mode can sample from 1 - 10 variable and the Event mode can sample from 1 - 5 variables.

In the Trend mode, the DVC70 can capture 2,496K total samples, and can measure up to 10 variables. In the Event mode the DVC70 can capture 555K total samples, and can measure up to 5 variables.

To put this in perspective, in the Trend mode, if you sampled your data every minute, you could capture 41.6K hours of data for a single variable or 4.16K hours of data for 10 variables. In the Event mode, the DVC70 can capture 9.2K hours of data for a single variable or 4.9K hours for 5 variables.

The graphs below graphically depict this information.

DVC70 Trend Mode

DVC70 Event Mode

DVC70 Capacity, Number Hrs. @ 1 Event / Second, Trend Mode

DVC70 Capacity, Number Hrs. @ 1 Event / Second, Event Mode

Trend Mode
			# Hours of monitoring at a sample rate of
# Variables to Monitor	Total # samples available to log		1 Sec	1 Min
1	2,496,000	equates to	693	41,600
2	1,248,000	equates to	347	20,800
3	832,000	equates to	231	13,867
4	624,000	equates to	173	10,400
5	499,200	equates to	139	8,320
6	416,000	equates to	116	6,933
7	356,571	equates to	99	5,943
8	312,000	equates to	87	5,200
9	277,333	equates to	77	4,622
10	249,600	equates to	69	4,160

Event Mode
			# Hours of monitoring at a sample rate of
# Variables to Monitor	Total # samples available to log		1 Sec	1 Min
1	554,667	equates to	154	9,244
2	453,818	equates to	126	7,564
3	384,000	equates to	107	6,400
4	332,800	equates to	92	5,547
5	293,647	equates to	82	4,894