Omron GRT1-OD8-1 — SmartSlice 8-Pt PNP Output
SKU: GRT1-OD8-1USD 108.00
Omron GRT1-OD8-1 SmartSlice 8-point PNP output module, 24 VDC, 0.5 A/point, DeviceNet / PROFIBUS / EtherCAT. In stock, China shipping.
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Product Overview
The Omron GRT1-OD8-1 is the SmartSlice 8-point PNP transistor output module for the GRT1 modular I/O system, manufactured by Omron Corporation. Hengyixin Automation stocks this controller option board in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports.
It switches eight 24 VDC outputs at 0.5 A per point (4 A common) from a 20.4 to 26.4 VDC I/O supply, with 0.5 ms ON delay and 1.5 ms OFF delay. Residual voltage is 1.2 VDC max at 500 mA. The terminal block is push-in cage-clamp with four IOG (V-) terminals and no IOV (V+) terminals.
The 84 x 15 x 74.4 mm IP20 housing clips to a 35 mm DIN rail and connects to a GRT1 bus coupler such as GRT1-DRT (PROFIBUS-DP), GRT1-PRT (PROFINET IO), or GRT1-ECT (EtherCAT). Up to 64 I/O units (63 for PROFINET) attach to one coupler. The product is discontinued with end-of-production 2024-03-31. The NPN sibling is the GRT1-OD8. The short-circuit-protected PNP version is the GRT1-OD8G-1.
Key Features
- GRT1 SmartSlice 8-point PNP transistor output module, 24 VDC, 0.5 A per point, 4 A common
- Push-in cage-clamp terminal, four IOG (V-) terminals, no IOV (V+) terminals, 1-wire / 2-wire connection
- 84 x 15 x 74.4 mm DIN rail housing, IP20, 88 g, plug-and-work with GRT1-DRT / GRT1-PRT / GRT1-ECT bus couplers
- Smart features: total hours counter, operations counter, supply voltage monitoring, last maintenance date
- SKU: GRT1-OD8-1
- Series: GRT1 SmartSlice modular remote I/O system
- Voltage: 24 VDC
- I/O: 8 I/O
Best-Fit Applications
- Solenoid bank on a bottling line where the GRT1-OD8-1 drives 8 valve solenoids through a GRT1-DRT PROFIBUS-DP coupler instead of running 8 home-run cables
- Indicator and stack-light cluster on a packaging machine where the GRT1-OD8-1 outputs feed 24 VDC LED drivers to a Sysmac NJ5 over EtherCAT
- Spare replacement on an automotive line where the older GRT1-OD8 NPN module is upgraded to the GRT1-OD8-1 PNP version to match the PNP sensor wiring
Buying Checklist
- Pick the GRT1-OD8-1 for 8 PNP sourcing points at 0.5 A each on a SmartSlice bus coupler (DeviceNet / PROFIBUS-DP / EtherCAT / PROFINET IO).
- Pick the GRT1-OD8 instead when the cabinet needs NPN sinking outputs and the PNP version is not compatible with the sensor wiring.
- Pick the GRT1-OD8G-1 instead when the panel needs 8 PNP outputs with built-in short-circuit and overcurrent protection per point.
Technical Specifications
| Manufacturer | Omron Corporation (Japan) |
|---|---|
| Series | GRT1 SmartSlice modular remote I/O system |
| Model / SKU | GRT1-OD8-1 |
| I/O Configuration | 8 PNP transistor outputs (sourcing), 1-wire / 2-wire connection |
| Rated Voltage | 24 VDC (20.4 to 26.4 VDC) I/O supply via the front terminal block |
| Rated Current | 0.5 A per point, 4 A per common; residual voltage 1.2 VDC max at 500 mA; leakage 0.1 mA max |
| Response Time | 0.5 ms ON delay, 1.5 ms OFF delay |
| Terminal | Push-in cage-clamp, detachable; 4 x IOG (V-) terminals, 0 x IOV (V+) terminals |
| Network Protocols | DeviceNet (GRT1-DRT coupler), PROFIBUS-DP (GRT1-DRT coupler), PROFINET IO (GRT1-PRT coupler), EtherCAT (GRT1-ECT coupler), CompoNet, MECHATROLINK-II |
| Smart Features | Counter for total hours and operations, volt meter for supply monitoring, calendar for last maintenance date, hot-swap without rewiring |
| Protection | No short-circuit protection on this variant; see GRT1-OD8G-1 for short-circuit protection |
| Environment / Wiring | 0 to 55 C operating, IP20, 35 mm DIN rail; 84 (H) x 15 (W) x 74.4 (D) mm; 88 g unpacked; product discontinued 2024-03-31 |
FAQ for GRT1-OD8-1
What is the Omron GRT1-OD8-1 used for?
It is the GRT1 SmartSlice 8-point PNP transistor output module. It switches eight 24 VDC loads at 0.5 A each from a SmartSlice bus coupler such as the GRT1-DRT (PROFIBUS-DP), GRT1-PRT (PROFINET IO), or GRT1-ECT (EtherCAT). Typical uses are solenoid banks on bottling lines, indicator clusters on packaging machines, and any 24 VDC load where running 8 home-run wires back to a master PLC is too expensive.
GRT1-OD8-1 vs GRT1-OD8 - what is the difference?
Both are SmartSlice 8-point 24 VDC transistor output modules in the same 84 x 15 x 74.4 mm housing. The GRT1-OD8-1 is PNP sourcing (switches the load to +24 V); the GRT1-OD8 is NPN sinking (switches the load to 0 V). Pick the -OD8-1 for European-style PNP wiring and the -OD8 for Japanese-style NPN wiring.
Does the GRT1-OD8-1 need a coupler?
Yes. The GRT1-OD8-1 is a SmartSlice I/O unit and does not have its own network port. It must plug into a GRT1-DRT (DeviceNet / PROFIBUS-DP coupler), GRT1-PRT (PROFINET IO coupler), or GRT1-ECT (EtherCAT coupler). The coupler manages the network protocol and exchanges I/O data with the master PLC; the GRT1-OD8-1 only exposes the 8 outputs.
Is the GRT1-OD8-1 still in production?
No. The GRT1-OD8-1 was discontinued on 2024-03-31 per the Omron GRT1-series discontinuation notice. Hengyixin stocks it for the existing install base. For new projects, the modern replacement is the NX-series NX-OD4256 (16-point PNP output) on an NX-ECC201 EtherCAT Coupler.
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