The MTT RC3900 Signal Conditioner Mounting Chassis is the base rack that brings MTT’s chassis-mounting MS39-series signal conditioners together into one compact, easy-to-wire assembly. Instead of powering and terminating each module individually, the RC3900’s motherboard distributes excitation power to every installed module en bloc, cutting down wiring time and panel clutter on installations that need many channels of signal conditioning in a small footprint.
Available in 16-slot and 8-slot versions to match the number of channels required, the RC3900 accepts either DIN rail or direct wall mounting, so it fits equally well inside a compact enclosure or a larger switchgear panel. Field wiring and computer-side wiring are separated onto their own screw terminal blocks, with an optional D-subminiature connector available for rapid multi-conductor termination, and the chassis is built in steel with nickel-plated terminals for a rugged, long-service installation.
| Module Capacity | 16-slot or 8-slot configurations |
| Compatible Modules | MS3900-series input and output signal conditioning modules (e.g. MS3954 output modules) |
| Power Supply | 100-240V AC or 24V DC (order option) |
| Power Distribution | Excitation power distributed to all installed modules via internal motherboard |
| Field-Side Terminals | M3.5 screw terminals |
| Computer-Side Terminals | M3.5 screw terminals, or 37-pin D-subminiature connector (female for input chassis, male for output chassis) |
| Mounting | DIN rail or direct wall mounting |
| Case Material | SPCC steel |
| PCB Material | Glass-fabric epoxy resin |
| Terminal Material | Nickel-plated steel screws; PBT plastic terminal blocks |
Frequently Asked Questions
What is the MTT RC3900 used for?
The RC3900 is a mounting chassis (rack) for MTT’s MS3900-series chassis-mount signal conditioners. It holds multiple modules in one rack, distributes power to them through the motherboard, and brings all the field and computer-side wiring to one set of terminals, so you do not need to power and wire each module separately.
How many modules can one RC3900 rack hold?
It is available in 16-slot and 8-slot versions. Pick the size based on how many MS3900-series modules your application needs now, and leave a few spare slots if you expect to add more signal conditioning points later.
What power supply does the RC3900 need?
The rack can be powered from either 100-240V AC or 24V DC, depending on what is available at your panel. Power is distributed to all installed modules through the motherboard, so only one power feed is needed for the whole rack.
How do I wire field signals and computer/control system connections to the rack?
Field-side wiring (sensor and signal inputs/outputs) terminates on M3.5 screw terminals on the rack, while the computer or control-system side connects through a 37-pin D-sub connector. This keeps field wiring and system wiring physically separated, which makes troubleshooting and module swaps easier.
How do I know if the RC3900 is right for my application?
It depends on how many MS3900-series modules you are running, your available power supply, and whether DIN rail or wall mounting suits your panel layout. Send us your module count and panel details and we can confirm the right rack size and configuration before you order.
Download MTT RC3900 Signal Conditioner Mounting Chassis information here
Datasheet: MTT_RC3900
