Emerson DeltaV SIS Logic Solver (SLS1508)

The nominal signal range is 20mA for conduction and 0 or 4mA for shutdown (configurable)

Full signal range 0~24mA

5.0% of the safety/diagnostic accuracy range

Resolution of 12 bits

Compliant voltage 20mA@600 Ω load

Triggered when the open-loop detection output deviates from the configured value by 15% and the current is less than 1.0mA

3. Discrete input channel

Project parameters

Number of channels 16

Isolate each channel from the system's optical isolation (1500VDC test), with no isolation between channels

Conductivity detection ≥ 2mA

Shutdown detection ≤ 1.65mA

The input impedance is about 1790 Ω

Input compatibility NAMUR sensor (12V), dry contacts, dry contacts with terminal resistors

Line fault detection (short circuit, optional) with resistance<100 Ω and current>6mA

Line fault detection (open circuit, optional) with current<0.35mA when resistance>40k Ω

The fault detection configuration requires channel level activation, and the dry contact requires an external 12k Ω parallel resistor (open circuit detection) and a 2.4k Ω series resistor (short circuit detection). The NAMUR sensor does not require an external resistor

4. Discrete output channels

Project parameters

Number of channels 16

Isolate each channel from the system's optical isolation (1500VDC test), with no isolation between channels

Output voltage: On site power supply voltage -2V

On site power supply with continuous 0.5A per channel, maximum 4.0A per card

Output load 56~3500 Ω

Turn off leakage current open-loop test on: 7.8mA; open-loop test off: typical 4.5 μ A, maximum 10 μ A

Short circuit protection current limit typical 2.0A

Line fault detection (short circuit): Under 24V DC on-site power supply, the resistance is less than 5 Ω for more than 1 second

Line fault detection (open circuit): Under 24V DC on-site power supply, resistance>25k Ω (open circuit detection),<3.5k Ω (no open circuit detection)

Pulse testing is recommended to be enabled (apply 1ms of 24V DC pulse every 50ms), and devices such as solid-state relays that do not support it can be disabled

Ordering Information and Preconditions

（1） Core Product Order List

Product Description Model

DeltaV SLS1508 Redundant Logic Solver (including Terminal Block) VS3202

1 wide SISnet terminal component (including right expansion card and 2 terminal resistors) VS6051

SIS database extension VS1508

8-width carrier with expansion cable assembly (including left and right expansion cards, 2 logic solver communication buses coaxial, 1 carrier backplane communication cable) VE4050E1C2

2 Wide Carrier (Improved Type, Including Bus Terminal) VE3051C0

（2） Pre requirements

Software version: DeltaV v8.3 or above is required.

2-Width Power/Controller Carrier: Upgraded version after 2004 (with white rectangular markings on the board, located between the power module and MD controller), model KJ4001X1-BA3 and above; The old version (marked with white dots) does not support downloading logic solver programs.

MD controller: Model must be 12P2093X082 or above, early models do not support DeltaV SIS system.