SSP North AB
30/08/2018
Manual V2f
92
13.11.3.1 Enable ERROR Output
The Enable ERROR Output property can be changed to enable or disable the ERROR output. The
ERROR output goes to 1 whenever the function is in ERROR state. It is 0 when the function is in OFF
state or ON state. The ERROR signal can be used in logic for indication, or for setting other functions
in safe state.
13.11.3.2 StartUp Test
If StartUp test is enabled, the function must get a valid OFF state before it can go to ON state after
start-up/power on. For example, a Safety Door, enabling StartUp test means the door must be opened
and closed each time the system is started power on, to test a complete operation cycle and that all
components of the function work as expected.
When start-up function is selected it requires OFF state before ON state. This means OFF state will
always be required at power on, after loss and return of power and after loss and return of
communication (radio or CAN). For manual hold to run devices such as two-hand control, enabling
devices and hold to run PB:s, this is a normal requirement to release before activation.
It is normally not needed to activate this for other safety devices such as E-stops and interlocked
doors. If start-up is selected for these devices an E-stop would be required to be pressed and released
and the doors would be required to be opened and closed at power on as well as at loss and return of
power/communication.
In other cases, to use the start-up function depends on the installation and the risk analysis. For a stop
function in a separate Safety Simplifier a start-up function with a reset can be required in case of loss
and return of power/communication.
13.11.3.3 Filter ON (ms)
Filter On means that the inputs need to be in ON-state this time to go to ON state. The Filter ON
property filters the ON state signal for all terminals in this function, when going from OFF state to ON
state. The logical signal from this block will be delayed for this time when the function is going from
OFF state to ON state. This filter does not affect the transition from ON state to OFF state or ERROR
state.
The reason for selecting Filter on is to prevent debouncing contacts from causing error state. If for
example one of two contacts debounce an input block could go to Error state. For PB:s a
recommendation from the producer can be 10 ms debounce time.
Note that filtering is applied to all terminals of the functions block. This includes terminals that are
configured to use pulsed signals as well. The filter is not applied to the actual physical signal, but to
the terminal value itself by the function. When a terminal starts receiving its ON state signal, the input
function it is part of will not consider that terminal to be in ON state until the Filter ON time has passed.
13.11.3.4 Filter OFF (ms)
Filter OFF means that the inputs need to be in OF-state this time to go to OFF state. The Filter OFF
property filters the OFF-state signal for all terminals in this function, when going from ON state to
either OFF state or ERROR state. The logical signal from this block will be delayed for this time when
the function is leaving ON state. For an E Stop this means the reaction time when pressing the E Stop.
Note that filtering is applied to all terminals of the function block. This includes terminals that are
configured to use pulsed signals as well. The filter is not applied to the actual physical signal, but to
the terminal value itself by the function. When a terminal stops receiving its ON state signal, the input
function it is part will keep considering that terminal to be in ON state until the Filter OFF time has
passed.
13.11.3.5 Enable Simultaneity
This property enables the Simultaneity property. When disabled, no simultaneity is required on the
input. When enabled, the Simultaneity (ms) property can be changed (see chapter 13.11.3.6).
13.11.3.6 Simultaneity (ms)
The Simultaneity property determines how long two terminals can differ when going from OFF state to
ON state. If they are in different states for longer than this time, the input function goes to ERROR
state, and waits for a new OFF state (as explained in the end of chapter 13.11.1). For a two-hand
device maximum 0.5 seconds is allowed between each hand from OFF to ON-state to fulfil the safety
