Growlink SI Pulse Module

4-Channel BACnet MS/TP Pulse Counter Module for Flow Meters The BMT-F-SI4 carries four S0 inputs that meet DIN EN 62053-31 Class A. Wire your flow meter's S0 contact straight to the module. BACnet MS/TP reports the rolling count back to the Growlink controller. The software converts pulses to gallons per minute, then trims pump runtime to land the exact injection volume each dose calls for. BACnet MS/TP S0 Input with Retentive Counters and 500 Hz Capture Pulse capture runs at 50 Hz through the Accumulator object and 500 Hz through the PulseConverter object. A high-pulse flow meter on a fast-cycling pump stays accurate. Retentive memory holds the last counter reading through a power blip. That matters when a recipe spans a UPS swap or breaker trip. Address and bit rate set with two rotary switches on the front. A new module drops onto an existing trunk without bringing the BACnet line up on a laptop. Key Features 4 × S0 pulse inputs (DIN EN 62053-31 Class A): Plug any S0-output flow or energy meter into the module. BACnet MS/TP over a single trunk: Reports counter values back to the Growlink controller and any other BACnet client without protocol gateways. 50 Hz Accumulator / 500 Hz PulseConverter: Two BACnet objects cover slow utility meters and fast injection-pump feedback on the same module. Retentive counter memory: Saves the last reading on power loss, so the recipe picks up the correct gallons after a panel cycle. 2 front-panel rotary switches: Set BACnet address and bit rate without a laptop or DIP-switch acrobatics. 24 V AC/DC supply with spring-clamp terminals: Pairs with the same low-voltage bus that runs the rest of the BMT-F I/O lineup. TH35 DIN rail mount: IEC 60715 rail snap-in keeps panels tidy alongside BMT-F-TO4, BMT-F-AOP4, or BMT-F-RTR. Technical Specifications Specification Value OEM module Metz Connect BMT-F-SI4 (P/N 1108891370) Communication BACnet MS/TP Inputs 4 × S0 pulse, DIN EN 62053-31 Class A Pulse rate 50 Hz (Accumulator object) / 500 Hz (PulseConverter object) Retentive memory Last counter reading saved on power loss Supply voltage 24 V AC/DC Terminals Spring-clamp blocks Mounting TH35 DIN rail (IEC 60715) Configuration 2 front rotary switches (address + bit rate) Typical use Flow meters → GPM injection control, water/energy meters, S0 pulse sources Companion modules BMT-F-TO4, BMT-F-DI4, BMT-F-AOP4, BMT-F-RTR