Sensia CLIF MOCK CD-20A Bedienungsanleitung

CLIF MOCK™

CD-20A Sample Probe Controller

User Manual

Manual No. 2350753-01, Rev. 02

Class I Groups C and D

Hazardous Locations

Important Safety Information

Symbols and Terms Used in this Manual

!WARNING: This symbol identies information about practices or circumstances that can lead to per-

sonal injury or death, property damage, or economic loss.

CAUTION: Indicates actions or procedures which if not performed correctly may lead to personal

injury or incorrect function of the instrument or connected equipment.

Important: Indicates actions or procedures which may affect instrument operation or may lead to an

instrument response which is not planned.

Technical Support Contact Information

Global headquarters:

Sensia LLC

200 Westlake Park Blvd

Houston, TX 77079

Clif Mock is a trademark of Sensia

Printed in the United States of America.

Manual No. 2350753-01, Rev. 02

September 2013

iii

CD-20A Sample Probe Controller

Contents

Important Safety Information ...............................................................................................................................ii

Section 1—Overview .......................................................................................................................................... 5

How It Works ................................................................................................................................................ 6

Pulse Input Scaling ...................................................................................................................................... 6

Table 1.1—Pulse Input Switch Setting Examples ........................................................................................ 6

Repeat Time Scaling .................................................................................................................................... 7

Table 1.2—Repeat Time Switch Setting Examples ...................................................................................... 7

Hazardous Location Safety Compliance ...................................................................................................... 7

Table 1.3—CD-20A Specications ............................................................................................................... 7

Section 2—Installation and Wiring...................................................................................................................... 8

Section 3—Maintenance .................................................................................................................................... 9

Operational Test ........................................................................................................................................... 9

Repeat Mode (Time-Proportional) Check-Out ........................................................................................... 10

External Pulse Mode (Flow-Proportional) Check-Out ................................................................................ 10

Sample Probe and CD-20A Check-Out ..................................................................................................... 10

Motor Control Assembly ..............................................................................................................................11

Table 3.1—Troubleshooting Tips for 12VDC/24VDC Controllers .............................................................. 12

Table 3.2—Troubleshooting Tips for 115VAC/230VAC Controllers ............................................................ 13

Factory Repairs .......................................................................................................................................... 14

Table of Contents CD-20A Sample Probe Controller

CD-20A Sample Probe Controller

Section 1—Overview

The CD-20A Sample Probe Controller is engineered for use with the True-Cut C-Series sample probe. It

provides both pulse input (ow proportional) and repeat (time proportional) control of the sample probe.

When a “start” pulse is received, the probe is rotated to capture and discharge an isokinetic sample. When

installed in a horizontal line, the probe is stopped in the closed position, while on a vertical line the probe is

stopped in the open position.

The C21 probe collects one 1.5 cc sample per 360-degree rotation.

The C22 probe collects two 1.5 cc samples per 360-degree rotation.

An explosion-proof housing encloses the complete assembly, and two ¾-in. NPT holes allow connection of

the line power and input pulse (for ow-proportional sampling). A ½-in. breather plug and a ½-in. conduit

plug are installed on opposite sides of the enclosure.

A coupling, jam nut, and hub allow the assembly to be mounted directly to the C-Series sample probe. No

brackets or supports are required; however, they are recommended for piping with signicant vibration.

The CD-20A controller consists of the following:

• a motor control assembly (12VDC, 24VDC, 115VAC, or 230VAC)

• a DC gear motor with a gear ratio of 150:1

• a cam with two high points mounted on the gear motor output shaft

• a proximity switch

Figure 1.1—CD-20A controller components

CD-20A Sample Probe Controller

The motor control assembly (Figure 1.2) consists of a control card and power board mounted to a ring, which

in turn, is mounted to the back of the CD-20A gear motor. All eld connections are to terminal block 1TB on

the control card. The motor and proximity switch connections are made at the factory to terminal block 2TB

on the power board.

CD20 Power Board

(2TB)

CD20 Control Card

(1TB)

Figure 1.2—CD-20A motor control assembly

How It Works

When an input pulse from either the repeat-mode timer or an external pulse source is received, a command

is output to rotate the motor. Armature feedback controls the speed of the motor at about 12 rpm and current

feedback limits motor current to 3 amperes.

Pulse Input Scaling

The four pulse scaling switches labeled X1000, X100, X10, and X1 allow selection of the desired number of

ow pulses per sample. Some switch setting examples are shown below.

Table 1.1—Pulse Input Switch Setting Examples

Switch Settings Pulses Per Sample

X1000 X100 X10 X1

0001 1

0 0 1 0 10

0 1 0 0 100

1000 1,000

1234 1,234

9999 9,999

CD-20A Sample Probe Controller

Repeat Time Scaling

The repeat mode utilizes a 1-Hz clock signal in lieu of the external ow proportional pulses to pace the

sample probe. The X1000, X100, X10, and X1 switches allow direct repeat time settings in seconds (see

below).

Table 1.2—Repeat Time Switch Setting Examples

Switch Settings Time Between

Samples (seconds)

X1000 X100 X10 X1

0003 3

0 0 1 0 10

0 1 0 0 100

1000 1,000

1234 1,234

9999 9,999

The repeat mode (time-proportional sampling) can be used as a test mode and a backup for the external input

pulse mode (ow-proportional sampling).

The proximity switch input amplier provides the signal to stop the motor. Two LEDs installed on the

controller card allow the user to test the controller’s operation. The I-LIMIT LED is on when the drive is in

current limit, which is normal during acceleration.The PROX (“Hold”) LED is on when the motor is stopped.

Field wiring instructions are provided in Section 2—Installation and Wiring, page 8. A signal verifying the

180-degree rotation of the motor can be transmitted to a control room if desired.

Hazardous Location Safety Compliance

Assemblies designed for 24VDC, 115VAC and 230VAC input power are UL-listed in the US and Canada for

Class I Groups C and D Hazardous Locations.

A 12VDC controller is available without the UL listing.

Table 1.3—CD-20A Specications

12/24 VDC 115/230 VAC

Temperature -40ºC to 55ºC -40ºC to 55ºC

Voltage 24VDC @2A max 115 / 230 VAC @ 1A max

Pulse Input 12VDC 12VDC

Transistor Output 12VDC max @ 100mA max 12VDC max @ 100mA max

Current Draw (Controller)

Stop Mode 30 mA 60 mA

Running Mode 0.5 Amp 150 mA

Peak Motor (Turn On) Current 1 Amp 300 mA

Current Draw (Motor)

Motor (Turn On) Current 320 mA 850 mA

CD-20A Sample Probe Controller

Section 2—Installation and Wiring

!WARNING: This module is designed for connection to hazardous electric voltages. Ignoring

this warning can result in severe personal injury or mechanical damage. This product must

be reliably earthed and installed by qualied personnel in accordance with the prevailing local

electrical wiring regulations and safety standards.

The CD-20A controller mounts directly to the C-Series sample probe via the DC-2 coupling (Figure 2.1).

The DC-2 coupling should be hand-tightened to ensure that the internal retaining ring is not pushed out of its

groove. If the DC-2 coupling is over-tightened at the CD-20A hub, the motor shaft will not engage the DC-1

coupling on the probe.

Figure 2.1—DC-2 coupling

All eld connections are made to terminal block 1TB on the control card (Figure 2.2). Install wiring as

follows:

1. Connect power to 1TB-1 and 1TB-2.

2. Select the pulsed or repeat mode of operation as follows:

a. Connect jumper wire “E1” to 1TB-4 to select the repeat mode.

b. Connect jumper wire “E1” to 1TB-3 to select the pulsed mode of operation.

3. For pulsed mode operation, perform the following steps.

a. Wire the ow pulse input to 1TB-5 (signal) and 1TB-6 (common). The input pulse contact must be

closed for at least 5 msec to produce a start pulse. If an electronic square wave is utilized, it must have

a pulse amplitude of 12VDC. A 5VDC square wave will not work.

b. If input ow rates up to 10Hz are required, ensure a jumper is installed between 1TB-6 and 1TB-7 to

add lter capacitance to the ow pulse input circuit. This jumper must be removed when high fre-

quency ow rate signal inputs (10 to 1000 Hz) are required.

4. To power an external ow pulse circuit such as a turbine meter pre-amplier, connect the instrument to

the +12VDC output at 1TB-7. Maximum current from this supply is 50 mA.

CD-20A Sample Probe Controller

1TB-6 Pulse Input (Emitter) ( )-

1TB-5 Pulse Input (Collector (+)

1TB-4 (Repeat)

1TB-3 (Pulsed)

1TB-8 12VDC Output

1TB-7 Filter

Jumper required for input

flow rates up to 10 Hz; remove

jumper for rates of 10 to 1000 Hz

E1 jumper

for selecting mode

X1000 Switch

X100 Switch

X10 Switch

X1 Switch

I-Limit LED

PROX ( Holdî) LEDì

1TB-2 (-)

1TB-1 (+)

24VDC

Power

1TB-2 (N)

1TB-1 (H)

115VAC or

230VAC Power

Figure 2.2—Field wiring of CD-20A controller

Section 3—Maintenance

Operational Test

The start-up procedure consists of three steps: a repeat-mode checkout, an external input pulse mode

checkout, and a sample probe/control drive checkout. The following user-supplied equipment is required to

complete these tests:

• push-button switch

• power supply

• a 100-ml graduated beaker or other applicable measuring device

Note If the CD20A controller is connected to a sample probe, disconnect it before performing the following

procedures.

CD-20A Sample Probe Controller

Repeat Mode (Time-Proportional) Check-Out

To perform the repeat mode check-out,

1. Connect jumper E1 to terminal 1TB-4 (Figure 2.2, page 9).

2. Set the X10 switch to “6” and set the X1 switch to “0” to set a 60-second repeat time.

3. Apply input power to the CD-20A. Input power will be 12VDC, 24VDC, 115VAC or 230VAC, depending

on the controller model purchased.

4. Verify that the motor rotates 180 degrees and stops. This should take approximately 2.5 seconds. The

process should repeat at regular intervals as determined by the switch settings.

Note—Any input pulses that occur when the CD-20SFA is rotating are disregarded by the control logic.

5. Verify that the PROX (“Hold”) LED is on while the motor is stopped.The PROX (“Hold”) LED should be

off while the motor is running and turn on when the motor stops.

6. Verify the I-LIMIT LED blinks on momentarily during acceleration of the CD-20A motor. After the motor

reaches the 12 RPM running speed, the I-LIMIT LED should turn off.

7. Verify the CD-20A output shaft rotates in a clockwise direction as you look at the shaft. The sample probe

will rotate counterclockwise when the CD-20A controller is connected. If the direction of motor rotation

is wrong, swap the motor armature leads at 2TB-1 and 2TB-2.

External Pulse Mode (Flow-Proportional) Check-Out

1. Disconnect the input power from the CD-20A.

2. Move the E1 jumper to 1TB-3 to select the external pulse input mode (Figure 2.2, page 9).

3. Connect a push-button switch to 1TB-5 and 1TB-6.

4. Set the X1000, X100, and X10 switches to “0” and set the X1 switch to “1” to select a sample output for

each input pulse.

5. Apply power to the CD-20A.

6. Activate the switch to generate a pulse input to the motor control assembly. To be registered by the con-

trol logic, the input pulse must have a duration of 5 msec or longer and it must occur when the CD-20A

motor is stopped and the PROX (“Hold”) LED is on. The maximum valid ow proportional sampling rate

is 2.5 seconds per sample (24 samples/min).

7. Verify the CD-20A output shaft rotates 180 degrees for each external pulse.

Note—Any input pulses that occur when the CD-20A is rotating are disregarded by the control logic.

Sample Probe and CD-20A Check-Out

1. Disconnect input power from the CD-20A.

2. Mount the CD-20A to the sample probe and hand-tighten the DC-2 coupling.

3. Make sure the push-button switch is still connected to 1TB-5 and 1TB-6 (Figure 2.2, page 9).

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