System Architecture Overview
The Chiller Plant Control (CPC) Redundancy configuration ensures uninterrupted plant operation by pairing two Tracer® SC+ controllers (SC+1 and SC+2) in a Leader-Follower (Teamwork) architecture over a dedicated link.
Step-by-Step Interactive Workflow Tables
Phase 1: Licensing & CPC Setup (SC+1)
Step | Actor Badge | SC+1 CPC Status | SC+2 CPC Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
01 |
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| Install CPC and Mission Critical Licenses on SC+1 | |
02 |
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| Reboot SC+1 | 🟢 Mission Critical License active on SC+1 |
03 |
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| Install chillers and verify communication | |
04 |
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| Create CPC Plant (Applications) | |
05 |
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| Configure and save CPC configuration | |
06 |
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| Store CPC configuration | ⭐ CPC fully configured on SC+1 |
Phase 2: Enabling Redundancy (SC+1)
Step | Actor Badge | SC+1 CPC Status | SC+2 CPC Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
07 |
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| Open CPC → Config → Setup | |
08 |
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| Validate MC + Teamwork licenses | |
09 |
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| Validate CPC instance count | |
10 |
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| Check "not in teamwork" condition | |
11 |
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| Show redundancy option in UI | |
12 |
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| Request "Enable Redundant CPC" | |
13 |
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| Create TCF file | ⭐ Redundancy enabled on SC+1 |
Phase 3: Configure MSTP Link for Teamwork (SC+1)
Step | Actor Badge | SC+1 CPC Status | SC+2 CPC Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
14 |
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| Open BACnet MSTP settings | |
15 |
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| Validate Teamwork license | |
16 |
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| Select "Teamwork" link | |
17 |
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| Click OK | |
18 |
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| Save MSTP settings | |
19 |
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| Reboot SC+1 | ⭐ Teamwork link Configured |
Phase 4: Backup (SC+1) and Pause CPC
Step | Actor Badge | SC+1 CPC Status | SC+2 CPC Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
20 |
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| Create system backup on SC+1 | |
21 |
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| Copy the backup to the Tech Laptop | 💻 Backup created |
22 |
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| Pause CPC on SC+1 | ⏸️ CPC paused on SC+1 |
Phase 5: License SC+2
Step | Actor Badge | SC+1 CPC Status | SC+2 CPC Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
23 |
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| Install CPC and MC Licenses on SC+2 | |
24 |
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| Reboot SC+2 | 🟢 MC License Installed on SC+2 |
Phase 6: Restore & Setup on SC+2
Step | Actor Badge | SC+1 CPC Status | SC+2 CPC Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
25 |
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| Disconnect ethernet cable to SC+2 | |
26 |
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| Restore backup to SC+2 | |
27 |
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| Reboot SC+2 | 🔄 Backup restored |
Phase 7: Reset Network Information & Delete Non-Chiller Plant Equipment on SC+2
Step | Actor Badge | SC+1 CPC Status | SC+2 CPC Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
28 |
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| Delete any controllers that are not part of the redundant CPC plant | |
29 |
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| Update IP address, BACnet/IP, BACnet MS/TP settings, host name, and device name | |
30 |
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| Reconnect ethernet cable to SC+2 | |
31 |
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| Refresh equipment and verify communication | |
32 |
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| Verify mapping of Supply Water Temp, Return Water Temp, and Flow Meter |
Phase 8: Sync CPC Operation
Step | Actor Badge | SC+1 CPC Status | SC+2 CPC Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
33 |
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| Verify CPC operation on SC+2 | |
34 |
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| Pause CPC on SC+2 | ⏸️ CPC paused on SC+2 |
35 |
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| Resume CPC on SC+1 | 👑 Leader CPC active |
Phase 9: Configure Teamwork & Create a Team
Step | Actor Badge | SC+1 CPC Status | SC+2 CPC Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
36 |
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| Open Teamwork UI on SC+1 | |
37 |
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| Create Team | 👑 Team Created with SC+1 as a Leader |
38 |
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| Add SC+2 as member | |
39 |
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| Assign Leader role to SC+1 | |
40 |
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| Assign Follower role to SC+2 | 🤝 Team operating |
Phase 10: Verify Redundant Operation
Step | Actor Badge | SC+1 CPC Status | SC+2 Status | Action Description | Outcome & Notes |
|---|---|---|---|---|---|
41 |
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| Resume CPC on SC+2 | ⭐ Redundancy fully operational |
42 |
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| Verify Leader CPC UI on SC+1 | |
43 |
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| Verify Follower UI (disabled fields) | |
44 |
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| Confirm plant control consistent across SCs | ⭐ Plant control consistent across SCs |
Key Controller States Reference
Throughout the setup flow, each Tracer® SC+ controller transitions through distinct operational states:
Controller State | Status Badge | Operational Description |
|---|---|---|
Not Configured | ⚪ SC+XX CPC Not Configured | Factory default state prior to license/application setup. |
Active (Leader) | 🟢 SC+1 CPC Active / 👑 Leader | Primary controlling unit executing CPC logic and commanding chillers. |
Paused | ⏸️ SC+XX CPC Paused | Application execution suspended during setup, backup, or role transition. |
Standby (Follower) | 🛡️ SC+2 CPC Stand By / Follower | Secondary unit monitoring Leader state; ready to take over seamlessly upon failover. |
Key Highlights & Verification Rules
- Equipment Filtering on SC+2 (Step 28): Delete all non-Chiller Plant Equipment on SC+2 so that only chillers and plant controllers remain.
- Network & Identity Reset (Step 29): Update IP address, BACnet/IP settings, BACnet MS/TP network settings, host name, and device name before reconnecting ethernet.
- Sensor Mapping Verification (Step 32): Explicitly verify the mapping of Supply Water Temperature, Return Water Temperature, and Flow Meter on SC+2 before syncing operation.
- Teamwork Role Assignment (Steps 39–40): TW App confirms Leader role to SC+1 and Follower role to SC+2.