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Motor Controllers

Gateway Linking

How to connect the SP-1P's built-in MX-1P module to an HPzenAi gateway over RS485 and link it in the app, whether the gateway is panel-integrated or external.

Section: Starter 1-Phase

What You'll Need​

Steps​

  • SP-1P assembly installed, 12V DC control power on, and mains supply available.
  • HPzenAi gateway (GW-W1 Wi-Fi or GW-XR1 SIM/RF) available, whether integrated within the panel arrangement or installed externally, and connected to the HPzenAi platform.
  • RS485 shielded twisted-pair cable pre-run from the SP-1P enclosure to the gateway.
  • HPzenAi app installed on your phone and logged in to your project account.
  • Modbus address of the built-in MX-1P module — factory default is Address 1.

RS485 Wiring to Gateway​

The built-in MX-1P module inside the SP-1P assembly exposes RS485-A and RS485-B terminals on the side of the unit. These connect to the gateway RS485 port. The RS485 link is required whether the gateway is integrated into the overall panel setup or installed externally.

Visual reference coming soon

Steps​

  • Route the RS485 shielded cable from the SP-1P enclosure to the gateway. Avoid routing next to mains cables inside the enclosure — use the low-voltage cable duct.
  • At the SP-1P end: A core → RS485-A terminal; B core → RS485-B terminal. Connect shield drain to the enclosure earth bar.
  • At the gateway end: A core → RS485-A; B core → RS485-B. Leave shield floating at gateway end.
  • If this is the only or last device on the RS485 bus and the run exceeds 10 m, fit a 120 Ω termination resistor between RS485-A and RS485-B at the SP-1P assembly terminals.
  • Multiple SP-1P units or other HPzenAi RS485 devices can share the same bus — assign unique Modbus addresses to each before scanning.

RS485 Scan & Device Detection​

Steps​

  • Open the HPzenAi app and tap the gateway tile to open gateway settings.
  • Tap RS485 → Scan Devices.
  • The SP-1P built-in module appears as 'Motor Controller — SP-1P' with its Modbus address.
  • If not detected: check 12V DC LED on the SP-1P assembly, check RS485 A/B polarity (swap if not detected), and check cable continuity.
  • Confirm the Modbus address on the SP-1P module — the address selector is inside the MX-1P module accessible from the front panel of the SP-1P assembly.

Add Starter to Your Project

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In the scan results, tap the detected SP-1P device

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Verifying the Connection​

Steps​

  • Confirm the starter tile shows Online in the app.
  • Tap Manual Control → Start. The SP-1P contactor should click and the motor should run.
  • Tap Stop and confirm the motor stops.
  • If the tile shows Offline: power-cycle the 12V DC supply to the SP-1P (switch off and on) — the module reconnects automatically within 60 seconds.
  • Runtime hours and event history appear in Device → Status after the first successful manual start.