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Core Product Summary
The HEIDENHAIN PLD 16-8 is a digital input/output module used in the PL 510 external PLC I/O system. It provides 16 digital inputs and 8 digital outputs, expanding the machine-interface I/O available to a compatible HEIDENHAIN control. The specifications presented here apply to ID 360916-11.
The module installs in a PLB 51x basic module, with base configurations available for four, six, or eight I/O modules. Each output supports a load of up to 2 A, but no more than four outputs may carry 2 A simultaneously; maximum output power is 200 W per module. These limits make the simultaneous load pattern an important selection consideration rather than channel count alone. Module mass is 0.2 kg.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | HEIDENHAIN |
| Model | PLD 16-8 |
| Device ID covered by these specifications | 360916-11 |
| Product type | Digital PLC input/output expansion module |
| System context | PL 510 external PLC I/O system; specified as an I/O module for PL 5×0 |
| Digital inputs | 16 |
| Digital outputs | 8 |
| Maximum load per output | 2 A |
| Simultaneous full-load restriction | No more than four outputs loaded at 2 A at any given time |
| Maximum output power per module | 200 W |
| Compatible basic-module configurations | PLB 510: four slots; PLB 511: six slots; PLB 512: eight slots |
| Module mass | 0.2 kg |
The specifications and basic-module relationships above apply to the documented PLD 16-8, ID 360916-11 configuration.
Engineering Selection Highlights
- PL 510 system membership → select the module as part of a PLB 51x-based I/O assembly, rather than as a complete standalone PLC.
- 16 digital inputs and 8 digital outputs → match both input and output requirements when allocating modules and base slots.
- Up to 2 A per output, with only four outputs permitted at 2 A simultaneously → evaluate which loads operate together, not just each load individually.
- Maximum module output power of 200 W → include the module-wide power limit in addition to individual-channel loading checks.
- Four-, six-, and eight-slot basic modules → choose the base around the required I/O population and cabinet arrangement.
- Empty housings required in unused base slots → include these components when specifying a partially populated assembly.
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
|---|---|---|
| I/O architecture | PL 510 external modular PLC I/O system | The PLD 16-8 supplies digital I/O within the larger assembly. |
| PLB 510 basic module | ID 358849-01; four I/O slots | Provides a four-slot base configuration. |
| PLB 511 basic module | ID 556941-01; six I/O slots | Provides a six-slot base configuration. |
| PLB 512 basic module | ID 557125-01; eight I/O slots | Provides an eight-slot base configuration. |
| Basic-module interface | HEIDENHAIN PLC interface | Integration uses the supported control-to-base architecture. |
| Basic-module supply | 24 V DC | This is the stated basic-module supply requirement, not a separately specified input-signal range. |
| Unused slots | Empty housing, ID 383022-xx | Unoccupied slots must be fitted with empty housings. |
| TNC 128 integration | External PLC I/O expansion through PL 510 | Provides additional I/O when the control’s internal inputs and outputs are insufficient. |
These compatibility relationships describe the documented PL 510 assembly and TNC 128 integration context.
Detailed Product Overview
Separate the I/O module from the base assembly
The PLD 16-8 performs the digital signal-interface role, while the PLB 51x basic module provides the installation platform and HEIDENHAIN PLC interface. This distinction matters when specifying a complete assembly: an I/O module and a basic module are separate components with different functions. The available PLB 510, PLB 511, and PLB 512 bases provide four, six, and eight I/O positions respectively. Partially populated bases also require empty housings in their unused positions.
Evaluate output loading at two levels
The output specification includes both a channel limit and a module limit. A single output may carry up to 2 A, but that rating does not permit all eight outputs to carry 2 A simultaneously. No more than four outputs may operate at that load at any given time, and maximum output power is 200 W for the module. An engineering load schedule therefore needs to consider concurrent operation as well as individual channel demand.
Keep module data distinct from system data
The 0.2 kg mass applies to the PLD 16-8 module. By contrast, the 24 V DC supply specification and NS 35 rail mounting arrangement are stated for the basic-module assembly. Keeping these categories separate avoids treating a base-level installation parameter as a complete electrical specification for every field connection on the I/O module.
For the TNC 128, PL 510 expansion is documented as a way to increase the control’s available PLC inputs and outputs. The associated 30 m maximum cable length applies to the connection reaching the last PLB 51x basic module. It should not be interpreted as a permissible cable length for each connected field signal. The numerical module specifications on this page are scoped to PLD 16-8, ID 360916-11.
PLD 16-8
PLD 16-8
Applications & System Role
The PLD 16-8 serves as the digital I/O component of a modular PLC expansion assembly. Its inputs and outputs extend the machine-interface capacity of a compatible control through the PLB 51x basic module. In the documented TNC 128 architecture, the PL 510 system adds external I/O when the control’s internal channel capacity is insufficient.
A technical-fit scenario is a PL 510 assembly that requires additional digital channels in groups of 16 inputs and 8 outputs. Selection must account for available base slots and the output loads that will operate simultaneously. The PLD 16-8 is the digital module in this arrangement; the separately identified PLA 4-4 provides the system’s analog input functions.
Dimensions, Mounting & Connection Notes
- PLD 16-8 module mass: 0.2 kg.
- The I/O module installs in a PLB 51x basic module. The basic-module assembly mounts on standard NS 35 rail, with DIN 46 227 or EN 50 022 identified for the rail arrangement.
- Available basic modules accommodate four, six, or eight I/O modules. Unused positions require empty housings.
- In the documented TNC 128 configuration, the maximum cable length to the last PLB 51x basic module is 30 m. This is a system connection limit, not a field-device wiring-length rating.
FAQ
What is the HEIDENHAIN PLD 16-8?
The HEIDENHAIN PLD 16-8 is a digital PLC I/O expansion module with 16 digital inputs and 8 digital outputs. It forms part of the PL 510 external modular I/O system.
Which device ID do these specifications cover?
These specifications cover PLD 16-8, ID 360916-11. The device ID identifies the configuration to which the listed channel counts, loading limits, and mass apply.
Which basic modules accommodate the PLD 16-8?
The documented PL 510 system uses PLB 510, PLB 511, and PLB 512 basic modules. These provide four, six, and eight I/O slots respectively.
Can all eight outputs carry 2 A simultaneously?
No. Each output supports up to 2 A, but no more than four outputs may carry 2 A at the same time. Maximum output power is also limited to 200 W per module.
How is the assembly mounted?
The PLD 16-8 installs in a PLB 51x basic module, and the basic-module assembly mounts on standard NS 35 rail. The rail arrangement is identified with DIN 46 227 or EN 50 022.
Are empty housings required in a partially populated base?
Yes. Unused I/O slots must be occupied by empty housings, identified as ID 383022-xx.
Does the PLD 16-8 provide analog inputs?
The PLD 16-8 is the digital I/O module in the documented arrangement. Analog input functions are provided by the separate PLA 4-4 module.
