Output Management

Introduction

The HMISCU Controller includes regular outputs and fast outputs.

The following output functions are configurable on fast outputs:

opulse train output (PTO)

opulse width modulation (PWM)

NOTE: By default, all outputs can be used as regular outputs.

Fast Output Management Availability

The information refers to all HMISCU Controllers with fast outputs:

Fallback Modes (Behavior for Outputs in Stop)

When the controller enters the STOP or EXCEPTION state for any reason, the local outputs are set to the fallback values. 2 modes are available:

Set all outputs to default: Each output is set to the configured default value, either 0 or 1 (initially set to 0 in the configuration).

Keep current values: Each output remains in its current state.

The fallback settings that may be configured (fallback to 0, fallback to 1, or fallback to the current state) do not apply to fast outputs if these outputs are configured for embedded function. If a detected error results in the controller entering fallback mode, these outputs will assume a value of 0 regardless of the configured fallback setting.

NOTE:

oFallback configuration for outputs does not apply when fast outputs are used for embedded function. In these cases fallback value is always 0.

oIn case of fallback for PTO embedded function, any ongoing move is aborted and ramp-down to 0 (controlled stop feature).

Short-circuit or Over-Current on Outputs

In the case of short-circuit or over-current on outputs, there are 2 groups of outputs:

oGroup 3: fast outputs

oGroup 1 and 2: relay outputs

There is a short circuit protection for Group 1 from outputs to V-. However there is no other short circuit protection on the outputs.

For HMISCU•A5 (type DIO), in the case of short-circuit or over-current on outputs, there are different considerations for the 2 groups of outputs:

oGroup 3 (FQ0 to FQ1): 2 fast outputs

oGroup 1 and 2 (DQ0 to DQ7): 8 regular outputs

For HMISCU•B5 (type DIO and AIO), in the case of short-circuit or over-current on outputs, there are different considerations for the 2 groups of outputs:

oGroup 3 (FQ0 to FQ1): 2 fast outputs

oGroup 1 and 2 (DQ0 to DQ5): 6 regular outputs

NOTE: Groups are defined in terminal block description in the presentation of each controller chapter.

The table describes the detection:

NOTE: The information in the table does not apply to relay outputs.

For more information on protecting outputs, refer to your controller wiring diagram and to the general wiring rules.

NOTE: The short-circuit diagnostic for each category is provided by the function GetshortcutStatus.

The regular outputs of this equipment do not have built-in reverse polarity protection. Incorrectly connecting polarity can permanently damage the output circuits or otherwise result in unintended operation of the equipment.

Example of incorrect wiring:

 

1   2 A fast-blow fuse

2   Incorrect wiring

Wiring Considerations

NOTE: The power supply of PTO/PWM circuit runs before the system power runs, otherwise the error of PTO/PWM occurs.

If your controller or module contains relay outputs, these types of outputs can support up to 240 Vac. Inductive damage to these types of outputs can result in welded contacts and loss of control. Each inductive load must include a protection device such as a peak limiter, RC circuit or flyback diode. Capacitive loads are not supported by these relays.