DX581-S 1SAP284100R0001 Safety digital input/output module ABB

Description

Overview

Essential details：DX581-S 1SAP284100R0001 Safety digital input/output module ABB

The potential-free control of safety actuators with the DX581-S safety I/O module requires an external safety relay, as shown in Fig. 1 To use the DX581-S safety I/O module with the AC500-S safety PLC, you have to create a valid system setup as described in [1] and [2].

In the example in Fig. 1, the BSR23 safety relay (2) allows the DX581-S safety I/O module (1) to control a safety solenoid valve (3).
Refer to [3.] for detailed information on the BSR23 safety relay, such as installation, operation and technical data.
The BSR23 safety relay has two input channels that control four NO (normally open), one NC (normally closed) contacts and a test connection with NC (normally closed) contacts. Refer to Fig. 2 for the terminals of the BSR23 safety relay

The terminal connections of the BSR23 safety relay:
– Channel 1 (CH1) input (+24 V DC): A1 (+) / R1 (-)
– Channel 2 (CH2) input (+24 V DC): A2 (-) / R2 (+)
– Test connection: X1/X2
– Relay connections:
• Normally open (NO): 13/14, 23/24, 33/34 and 43/44
• Normally closed (NC): 51/52
For details on how to connect the DX581-S safety I/O module and the BSR23 safety relay, refer to chapter 3. You can install the BSR23 safety relay in the same control cabinet as the DX581-S safety I/O module to extend its digital safety outputs.
If it is necessary, you can connect several safety relays to a DX581-S safety I/O module if the current drain per digital safety output does not exceed 0.5 A, +24 V DC.
The benefits of using the BSR23 safety relay with the DX581-S safety I/O module:
– The BSR23 is a cost-effective safety relay that uses PCB safety relays and no other electronic components. You can connect readback contacts from the BSR23 safety relay to the safety digital input channels on the DX581-S safety I/O module.
– The BSR23 safety relay has four active potential-free contacts. This permits simultaneous control of up to four safety actuators, for example, to stop four valves or motors up to PL e (ISO 13849-1) simultaneously for the given safety function. This makes it possible to decrease the number of required safety digital outputs in the DX581-S safety I/O module for the given safety function.
– Enables driving inductive loads, such as safety solenoid valves with a current of more than 0.5 A, +24 V DC.
– Enables driving large safety contactors and, safety solenoid valves with a current of up to 6 A / 5 A (+24 V DC / 250 V AC).
– Saves space in the control cabinet.

DX581-S

The BSR23 safety relay has four removable connection blocks. Each connection block has four screw terminals. For detailed information on the connections of the BSR23 safety relay and how to code the connection blocks, refer to [3.].
Notes on the electrical connections:
– Make sure that the wires are fitted with crimp terminals or ferrules or use solid copper conductors.
– Make sure that the connection blocks and wires are clearly marked to avoid incorrect connections.
The example connection from the DX581-S safety I/O module to the BSR23 safety relay uses two digital outputs from the DX581-S safety I/O module to connect to the two input channels on the BSR23 safety relay. With an error exclusion for wiring DX581-S digital safety output channels to BSR23 inputs, you can use a single digital safety output channel to reach the required safety integrity level for the given safety function. Refer to Section 3.4.7 “Circuit examples” in [1.] for information on which SIL and PL can be reached for the selected connections. Note that both the DX581-S safety I/O module and the BSR23 safety relay are designed for up to SIL 3 and PL e safety applications.
Refer to Fig. 3 for an overview of the connection example with two digital safety output channels in use on the DX581-S safety I/O module.

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