RPM RS232 to RS485 Converter Replacement | FRONTLINE Maintenance Tool

Last Updated: 04/24/2025 1:45 AM

The following table lists all the components that make up the document.

Title	Type	Status	Last Updated
Rapiscan VM-250 Vehicle Monitor	Device	Published	10/14/2024 9:50 AM
Rapiscan TM-850 Rail Monitor	Device	Published	09/18/2024 10:28 AM
7621 - 1401 - Establish Initial Conditions; Remark:	Procedure Step	Published	06/29/2023 5:37 PM
1401 - Establish Initial Conditions	Instruction	Published	09/30/2022 3:14 PM
7268 - 7231 - Close lane; Remark:7233	Procedure Step	Published	04/27/2023 7:01 PM
9053 - Warning : Traffic should temporarily be rerouted or halted during conduction of this pr...	Annotation	Published	09/27/2023 9:09 AM
7231 - Close lane	Instruction	Published	04/18/2023 1:00 PM
7233 - Use orange safety (traffic control) cones to setup barriers. Practice establi...	Remark	Published	04/24/2023 12:18 PM
7373 - 7232 - Open RPM door; Remark:7267	Procedure Step	Published	09/01/2023 7:55 PM
7232 - Open RPM door	Instruction	Published	04/18/2023 1:02 PM
7267 - Open all doors needed to access components.	Remark	Published	09/16/2023 4:54 PM
7454 - 7290 - Disable tamper switches; Remark:7416	Procedure Step	Published	06/02/2023 5:25 PM
7290 - Disable tamper switches	Instruction	Published	05/01/2023 8:14 AM
7416 - Use a magnet to disable tamper switches for all open doors. Use adhesive tape...	Remark	Published	06/02/2023 1:18 PM
8561 - 7291 - Disable both infrared occupancy sensors; Remark:8514	Procedure Step	Published	09/18/2023 12:05 AM
5291 - Note : It is good practice to verify all cables and connectors are labeled prior to ...	Annotation	Published	10/24/2022 8:35 AM
7291 - Disable both infrared occupancy sensors	Instruction	Published	05/01/2023 8:15 AM
8514 - Verify sensors mounted in control pillar door are receivers.	Remark	Published	09/29/2023 11:52 AM
9205 - To disconnect sensor cable, turn collar counterclockwise and pull away from s...	Remark	Published	09/29/2023 11:52 AM
8221 - 7676 - Brief system operators on expected work, duration, anticipated alarms, and fa...; Remark:	Procedure Step	Published	09/01/2023 9:26 PM
7676 - Brief system operators on expected work, duration, anticipated alarms, and fa...	Instruction	Published	07/01/2023 11:39 PM
8344 - 8343 - Locate RS232 to RS485 Converter; Remark:8341	Procedure Step	Published	09/12/2023 8:57 AM
8343 - Locate RS232 to RS485 Converter	Instruction	Published	09/12/2023 8:55 AM
8341 - For vehicle monitors (VM-250), the converter is located behind the LD-260...	Remark	Published	09/12/2023 8:56 AM
8342 - For train monitors (TM-850), the converter is usually located in the electron...	Remark	Published	09/12/2023 8:57 AM
8340 - 8339 - Uninstall LD-260 (VM-250 only); Remark:	Procedure Step	Published	09/12/2023 8:59 AM
8339 - Uninstall LD-260 (VM-250 only)	Instruction	Published	09/12/2023 8:58 AM
7272 - 7238 - Disconnect three (3) connectors; Remark:7239	Procedure Step	Published	04/27/2023 7:06 PM
7238 - Disconnect three (3) connectors	Instruction	Published	04/24/2023 12:38 PM
7239 - Needle nose pliers can be used to remove connectors.	Remark	Published	05/10/2023 3:08 PM
8347 - 8346 - Remove two (2) mounting screws; Remark:8345	Procedure Step	Published	09/12/2023 9:09 AM
8346 - Remove two (2) mounting screws	Instruction	Published	09/12/2023 9:06 AM
8345 - Use medium Phillips (PH2) screwdriver. Retain screws.	Remark	Published	09/12/2023 9:09 AM
8338 - 8337 - Remove LD-260; Remark:8336	Procedure Step	Published	09/12/2023 9:01 AM
8337 - Remove LD-260	Instruction	Published	09/12/2023 9:01 AM
8336 - Retain part for reinstallation	Remark	Published	09/12/2023 9:01 AM
8600 - 8592 - Uninstall faulty RS232 to RS485 converter; Remark:	Procedure Step	Published	05/28/2024 2:32 PM
8592 - Uninstall faulty RS232 to RS485 converter	Instruction	Published	09/18/2023 11:52 AM
8349 - 7293 - Disconnect RJ-45 Ethernet cable; Remark:8367	Procedure Step	Published	09/12/2023 9:18 AM
7293 - Disconnect RJ-45 Ethernet cable	Instruction	Published	05/01/2023 8:18 AM
8367 -	Remark	Published	09/12/2023 10:44 AM
8354 - 8353 - Disconnect power/signal connector; Remark:8352	Procedure Step	Published	09/12/2023 9:30 AM
8353 - Disconnect power/signal connector	Instruction	Published	09/12/2023 9:26 AM
8352 - Needle nose pliers may be used	Remark	Published	09/12/2023 9:30 AM
8358 - 8357 - Remove mounting hardware; Remark:8356	Procedure Step	Published	09/12/2023 9:37 AM
8357 - Remove mounting hardware	Instruction	Published	09/12/2023 9:34 AM
8356 - For a VM-250, use Pliers. Retain hardware. For a TM-850, remove mounti...	Remark	Published	04/13/2025 5:57 PM
8605 - 8593 - Remove faulty RS232 to RS485 converter; Remark:	Procedure Step	Published	09/18/2023 12:48 PM
8593 - Remove faulty RS232 to RS485 converter	Instruction	Published	09/18/2023 11:57 AM
3397 - 3395 - Label faulty component; Remark:3396	Procedure Step	Published	07/21/2024 6:59 AM
3395 - Label faulty component	Instruction	Published	08/07/2021 11:07 AM
3396 - Use tag or tape. Include date of removal, description of failure symptoms, co...	Remark	Published	08/09/2021 11:35 AM
8601 - 8594 - Install new RS232 to RS485 Converter; Remark:	Procedure Step	Published	09/18/2023 12:46 PM
8594 - Install new RS232 to RS485 Converter	Instruction	Published	09/18/2023 12:10 PM
8602 - 8595 - Mount new RS232 to RS485 converter; Remark:8596	Procedure Step	Published	09/18/2023 12:46 PM
8595 - Mount new RS232 to RS485 converter	Instruction	Published	09/18/2023 12:12 PM
8596 - Use retained hardware.	Remark	Published	09/18/2023 12:16 PM
8603 - 2757 - Reconnect wiring; Remark:8597	Procedure Step	Published	09/18/2023 12:47 PM
7263 - Caution : Correct placement of connectors and wiring is critical to proper operation.	Annotation	Published	04/24/2023 2:32 PM
2757 - Reconnect wiring	Instruction	Published	08/12/2021 10:35 AM
8597 - Connect power/signal connector and RJ-45 Ethernet cable.	Remark	Published	09/18/2023 12:21 PM
8604 - 8598 - Reinstall LD-260 (VM-250 only); Remark:	Procedure Step	Published	09/18/2023 12:47 PM
8598 - Reinstall LD-260 (VM-250 only)	Instruction	Published	09/18/2023 12:23 PM
7277 - 7246 - Mount new LD-260; Remark:7247	Procedure Step	Published	04/27/2023 7:07 PM
7246 - Mount new LD-260	Instruction	Published	05/10/2023 3:12 PM
7247 - Use retained screws. Use medium Phillips (PH2) screwdriver.	Remark	Published	05/10/2023 3:12 PM
7278 - 7248 - Reconnect three (3) connectors; Remark:7411	Procedure Step	Published	05/08/2023 8:31 AM
7248 - Reconnect three (3) connectors	Instruction	Published	05/10/2023 3:13 PM
7411 - Reconnect three (3) connectors	Remark	Published	05/08/2023 8:30 AM
7279 - 7249 - Return equipment to normal operating condition; Remark:	Procedure Step	Published	04/27/2023 4:13 PM
7249 - Return equipment to normal operating condition	Instruction	Published	04/08/2025 3:22 PM
8503 - 7250 - Power on RPM; Remark:7251	Procedure Step	Published	09/16/2023 9:00 PM
7250 - Power on RPM	Instruction	Published	05/01/2023 8:31 AM
7251 - Move LD-260 switch to ON position. The LED PWR ON	Remark	Published	05/10/2023 3:14 PM
7281 - 7252 - Verify RPM start-up; Remark:7253	Procedure Step	Published	04/20/2025 3:26 PM
7252 - Verify RPM start-up	Instruction	Published	04/27/2023 2:23 PM
7253 - RPM will perform a power on self-test (POST) and collect a background radiati...	Remark	Published	05/10/2023 3:14 PM
8506 - 7254 - Confirm network connection; Remark:7255	Procedure Step	Published	09/24/2023 3:34 PM
7254 - Confirm network connection	Instruction	Published	04/27/2023 2:22 PM
7255 - Contact operators to confirm communications have been reestablished between RPM ...	Remark	Published	05/10/2023 3:15 PM
8588 - 7305 - Enable both infrared occupancy sensors; Remark:8559	Procedure Step	Published	09/17/2023 11:04 PM
5553 - Caution : Correct placement of connectors and wiring is critical to proper operation.	Annotation	Published	10/28/2022 2:19 PM
7305 - Enable both infrared occupancy sensors	Instruction	Published	05/01/2023 8:33 AM
8559 - To reconnect sensor cable, align connectors, push towards sensor, and turn co...	Remark	Published	09/29/2023 12:05 PM
8433 - 8432 - Close all RPM doors; Remark:	Procedure Step	Published	09/14/2023 9:14 AM
8432 - Close all RPM doors	Instruction	Published	09/14/2023 9:14 AM
8434 - 8431 - Generate speed message; Remark:8430	Procedure Step	Published	09/14/2023 9:15 AM
8431 - Generate speed message	Instruction	Published	09/14/2023 9:14 AM
8430 - Stand to side of control pillar. Open door with infrared sensors.	Remark	Published	09/14/2023 9:15 AM
8606 - 7308 - Verify Nano Controller response; Remark:8599	Procedure Step	Published	09/18/2023 12:49 PM
7308 - Verify Nano Controller response	Instruction	Published	05/01/2023 8:35 AM
8599 - Nano Controller LEDs will illuminate (IN1, IN2	Remark	Published	09/18/2023 12:36 PM
8437 - 8425 - Verify speed message in CAS; Remark:8424	Procedure Step	Published	09/14/2023 9:37 AM
8425 - Verify speed message in CAS	Instruction	Published	09/14/2023 9:36 AM
8424 - Contact CAS operator to verify “SP” appears in RAVEN [Radiation Alarm and...	Remark	Published	09/14/2023 9:37 AM
8589 - 7310 - Enable tamper switches; Remark:7348	Procedure Step	Published	09/17/2023 11:07 PM
7310 - Enable tamper switches	Instruction	Published	05/01/2023 8:36 AM
7348 - Remove all magnets and/or adhesive tape from door switches.	Remark	Published	09/17/2023 10:23 PM
8507 - 7256 - Close and lock all RPM doors; Remark:	Procedure Step	Published	09/24/2023 3:35 PM
7256 - Close and lock all RPM doors	Instruction	Published	04/27/2023 2:21 PM
7842 - 7820 - Inform system operators upon completion of maintenance action; Remark:	Procedure Step	Published	07/07/2023 11:15 PM
7820 - Inform system operators upon completion of maintenance action	Instruction	Published	07/07/2023 10:02 PM
322 - 321 - Document maintenance actions; Remark:	Procedure Step	Published	06/17/2021 9:49 AM
321 - Document maintenance actions	Instruction	Published	04/21/2025 11:19 AM
2869 - 2585 - Document maintenance performed; Remark:2866	Procedure Step	Published	06/18/2021 5:58 PM
2585 - Document maintenance performed	Instruction	Published	07/09/2021 12:15 PM
2866 - Record observations, times, and results for the maintenance report.	Remark	Published	04/21/2025 11:39 AM
4706 - 4705 - Submit report; Remark:4864	Procedure Step	Published	06/29/2022 9:50 AM
4705 - Submit report	Instruction	Published	06/29/2022 9:50 AM
4864 - As specified by management or contractual obligations.	Remark	Published	07/28/2022 1:36 PM
Corrective Maintenance Procedure	Document Type	Published	03/02/2020 3:32 PM
Upon failure of RS232 to RS485 Converter	Frequency	Published	09/18/2023 7:54 PM
Warning	Annotation Type	Published	03/02/2020 3:25 PM
Note	Annotation Type	Published	03/02/2020 3:25 PM
Caution	Annotation Type	Published	03/02/2020 3:24 PM
Technician 2	Skill Level	Published	04/09/2020 1:17 AM
Keys to access RPM	Replacement Parts	Published	04/27/2023 6:56 PM
Magnets and adhesive tape to disable door tamper switches	Replacement Parts	Published	06/02/2023 10:08 PM
Medium Phillips (PH2) screwdriver	Tools	Published	04/24/2020 4:40 PM
Needle nose pliers	Tools	Published	05/06/2020 4:10 PM
8mm Socket	Replacement Parts	Published	09/18/2023 6:02 PM
Orange/yellow safety vest	Replacement Parts	Published	04/27/2023 6:56 PM
Safety shoes	Replacement Parts	Published	04/27/2023 6:56 PM
Gloves	Replacement Parts	Published	05/10/2023 3:28 PM
Protective headwear: glasses, hard hat	Replacement Parts	Published	05/10/2023 3:31 PM
Orange traffic cones	Replacement Parts	Published	04/27/2023 6:56 PM
Disable tamper switch	Image	Published	09/07/2023 8:22 PM
Disable Tamper Switch	Image	Published	06/02/2023 2:28 PM
Infrared Receiver	Image	Published	09/17/2023 7:09 PM
Infrared Receiver DC	Image	Published	09/29/2023 11:47 AM
Infrared Disconnect Sensor Cable	Image	Published	09/17/2023 7:11 PM
Infrared Sensor Disconnect	Image	Published	09/17/2023 7:12 PM
Locate RS232 to RS485 Converter	Image	Published	09/11/2023 2:46 PM
Locate RS232 to RS485 Converter for train monitor	Image	Published	09/11/2023 2:49 PM
LD-260 Disconnect Switch Connector Removal	Image	Published	04/24/2023 12:57 PM
Remove two (2) mounting screws	Image	Published	09/12/2023 9:06 AM
Disconnect RJ-45 Ethernet cable	Image	Published	09/12/2023 9:17 AM
LD-260 Disconnect power signal connector	Image	Published	09/12/2023 9:29 AM
Remove mounting hardware	Image	Published	09/12/2023 9:36 AM
RS232 Converter Retained Screws	Image	Published	09/18/2023 12:15 PM
Reconnect RJ-45 Converter	Image	Published	09/18/2023 12:20 PM
LD-260 Disconnect Switch Screw Locations	Image	Published	04/24/2023 1:03 PM
LD-260 Disconnect Switch Connector Install	Image	Published	04/24/2023 1:19 PM
LD-260 Disconnect Switch Power On	Image	Published	05/04/2023 3:37 PM
Infrared Connection	Image	Published	09/29/2023 12:02 PM
Infrared Cable Installation	Image	Published	09/17/2023 10:12 PM
Infrared Sensor Cable	Image	Published	09/17/2023 10:13 PM
Open door with infrared sensors	Image	Published	09/14/2023 9:01 AM
PLC Response	Image	Published	09/18/2023 12:35 PM
Remove all magnets and or adhesive tape from door switches	Image	Published	09/08/2023 4:18 PM
Remove Magnet on Tamper Switch	Image	Published	06/02/2023 4:31 PM

DET-RPM-RAP-CM17

Replace the RS232 to RS485 Converter on radiation portal monitor (RPM).

Equipment Hierarchy

Rapiscan VM-250 Vehicle Monitor

Rapiscan TM-850 Rail Monitor

Frequency

Upon failure of RS232 to RS485 Converter

Technician Level

Teknisyen 2

x 1

Duration

Length of time

Tools Required

Keys to access RPM

Magnets and adhesive tape to disable door tamper switches

Medium Phillips (PH2) screwdriver

Needle nose pliers

8mm Socket

Orange/yellow safety vest

Safety shoes

Gloves

Protective headwear: glasses, hard hat

Orange traffic cones

Materials Required

RS232 to RS485 Converter (Rapiscan Part #2725A)

Originators

Brian Tucker

Erica Kilgannon

Yavor Andreev

Vasil Vasilev

Originating Organization

PNNL; Theta Consult

Approver

Cody Hostick

Safety Concerns

Traffic

Electrical

Final Documentation

Corrective Maintenance Report

Departmental Coordination

Prior to arrival, notify operators concerning expected work, duration, and anticipated alarms and fault indications.

Date of Origin

2021-07-01

Version

0.00

Hazırlık

Step 1

Main Step

7621 - 1401 - Establish Initial Conditions; Remark:

Step 00

1401 - Establish Initial Conditions

Establish Initial Conditions

7268 - 7231 - Close lane; Remark:7233

9053 - Warning : Traffic should temporarily be rerouted or halted during conduction of this pr...

Type

Warning

Traffic should temporarily be rerouted or halted during conduction of this procedure to ensure maintenance provider safety and to prevent unscreened vehicles from passing.

Step 00

7233 - Use orange safety (traffic control) cones to setup barriers. Practice establi...

Use orange safety (traffic control) cones to setup barriers. Practice established safety protocols.

7373 - 7232 - Open RPM door; Remark:7267

Step 00

7267 - Open all doors needed to access components.

Open all doors needed to access components.

7454 - 7290 - Disable tamper switches; Remark:7416

Step 00

7290 - Disable tamper switches

Disable tamper switches

7416 - Use a magnet to disable tamper switches for all open doors. Use adhesive tape...

Use a magnet to disable tamper switches for all open doors. Use adhesive tape to disable older mechanical switches.

8561 - 7291 - Disable both infrared occupancy sensors; Remark:8514

5291 - Note : It is good practice to verify all cables and connectors are labeled prior to ...

Type

Note

It is good practice to verify all cables and connectors are labeled prior to disconnection.

Step 00

7291 - Disable both infrared occupancy sensors

Disable both infrared occupancy sensors

8514 - Verify sensors mounted in control pillar door are receivers.

Verify sensors mounted in control pillar door are receivers.

9205 - To disconnect sensor cable, turn collar counterclockwise and pull away from s...

To disconnect sensor cable, turn collar counterclockwise and pull away from sensor.

8221 - 7676 - Brief system operators on expected work, duration, anticipated alarms, and fa...; Remark:

Step 00

7676 - Brief system operators on expected work, duration, anticipated alarms, and fa...

Brief system operators on expected work, duration, anticipated alarms, and fault indications before starting work

8344 - 8343 - Locate RS232 to RS485 Converter; Remark:8341

Step 00

8343 - Locate RS232 to RS485 Converter

Locate RS232 to RS485 Converter

8341 - For vehicle monitors (VM-250), the converter is located behind the LD-260...

For vehicle monitors (VM-250), the converter is located behind the LD-260

8342 - For train monitors (TM-850), the converter is usually located in the electron...

For train monitors (TM-850), the converter is usually located in the electronics cabinet on the control pillar

Converter for RS232 to RS485 for train monitor

Çalıştırma

Step 2

Main Step

8340 - 8339 - Uninstall LD-260 (VM-250 only); Remark:

Step 00

8339 - Uninstall LD-260 (VM-250 only)

Uninstall LD-260 (VM-250 only)

7272 - 7238 - Disconnect three (3) connectors; Remark:7239

5291 - Note : It is good practice to verify all cables and connectors are labeled prior to ...

Type

Note

It is good practice to verify all cables and connectors are labeled prior to disconnection.

Step 00

7238 - Disconnect three (3) connectors

Disconnect three (3) connectors

7239 - Needle nose pliers can be used to remove connectors.

Needle nose pliers can be used to remove connectors.

8347 - 8346 - Remove two (2) mounting screws; Remark:8345

Step 00

8346 - Remove two (2) mounting screws

Remove two (2) mounting screws

8345 - Use medium Phillips (PH2) screwdriver. Retain screws.

Use medium Phillips (PH2) screwdriver. Retain screws.

8338 - 8337 - Remove LD-260; Remark:8336

Step 00

8336 - Retain part for reinstallation

Retain part for reinstallation

Çalıştırma

Step 3

Main Step

8600 - 8592 - Uninstall faulty RS232 to RS485 converter; Remark:

Step 00

8592 - Uninstall faulty RS232 to RS485 converter

Uninstall faulty RS232 to RS485 converter

8349 - 7293 - Disconnect RJ-45 Ethernet cable; Remark:8367

5291 - Note : It is good practice to verify all cables and connectors are labeled prior to ...

Type

Note

It is good practice to verify all cables and connectors are labeled prior to disconnection.

Step 00

7293 - Disconnect RJ-45 Ethernet cable

Disconnect RJ-45 Ethernet cable

8354 - 8353 - Disconnect power/signal connector; Remark:8352

Step 00

8353 - Disconnect power/signal connector

Disconnect power/signal connector

8352 - Needle nose pliers may be used

Needle nose pliers may be used

use pliers to disconnect power connector

8358 - 8357 - Remove mounting hardware; Remark:8356

Step 00

8357 - Remove mounting hardware

Remove mounting hardware

8356 - For a VM-250, use Pliers. Retain hardware. For a TM-850, remove mounti...

For a VM-250, use Pliers. Retain hardware.
For a TM-850, remove mounting screws. Use medium Phillips (PH2) screwdriver. Retain screws.

8605 - 8593 - Remove faulty RS232 to RS485 converter; Remark:

Step 00

8593 - Remove faulty RS232 to RS485 converter

Remove faulty RS232 to RS485 converter

3397 - 3395 - Arızalı bileşeni etiketleyin; Remark:3396

Step 00

3395 - Arızalı bileşeni etiketleyin

Arızalı bileşeni etiketleyin

3396 - Etiket veya bant kullanın. Çıkarıldığı tarihi, arıza belirtilerinin açıklamasını...

Etiket veya bant kullanın. Çıkarıldığı tarihi, arıza belirtilerinin açıklamasını, ülkeyi, sahayı ve şerit numarasını ekleyin. Nükleer Kaçakçılık Tespiti ve Caydırıcılık (NSDD) kılavuzuna veya sözleşme gereksinimlerine göre imha edin.

Hazırlık

Step 4

Main Step