Installation and operation manual for Barksdale Dynalco SST7200 and SST7400 speed switches, covering wiring, specifications and software setup.
The Dynalco SST7200 and SST7400 are DIN rail mountable speed switches/transmitters that convert rotational speed (RPM) into an industry standard 4–20 mA analog output. Both models accept a pulsed input from a 2- or 3-wire speed sensor; the SST7200 has a 4–20 mA output and two relay trips, while the SST7400 has four relay trips. Settings are programmed with the Dynalco host software through a USB connection to a PC.
This installation and operation manual covers specifications, terminal connections, outline dimensions, ordering information and the host software screens (Program, Save File, Load File, Import Settings). It also includes CSA instructions for Class I, Division 2 installations and states that relay outputs should be tested monthly for proper operation.
| Input supply voltage | 10 - 36 VDC, maximum 10 W |
|---|---|
| Frequency input range | 0 – 50 KHz |
| Relay contact rating | 6.0 A @ 28 VDC or 115 VAC |
| Proportional output | 4 – 20 mA into maximum 1K load |
| Operating temperature range | -40 to +70 DegC |
| Programming interface | USB port; Windows XP, Vista, Windows 7 & 8 compatible |
| Agency approval | CSA Class I, Div. 2, Groups A, B, C, D |
It mounts on a standard 35 mm DIN rail using the integral latch on the rear of the device.
It requires 10 to 36 VDC and draws a maximum of 10 W.
The Dynalco host software programs the unit through a USB connection to a PC.
They should be tested monthly for proper operation, especially when used for engine overspeed shutdown or another critical function.