User’s Manual
35
4.5. INPUT / OUTPUT CONNECTIONS
All the inputs for the regen unit are 24VDC. The inputs are all common to TB2-4. The
inputs are bidirectional, and can be configured to be sinking or sourcing as the
installation requires. It is recommended that inputs be configured as sinking, as this
is more failsafe.
The outputs are MOSFET optocouplers, and will show a low resistance (20Ω) when
activated. When not activated, they will appear open.
4.5.1. LOCAL I/O +24V SUPPLY- TB2-1 & TB2-5
This pin supplies 24V, a maximum of 100mA, which can be used to drive the
Regen inputs. 24V+ is on TB2-1, 24VCommon is on TB2-5.
4.5.2. ENABLE INPUT - TB2-2
This input enables the M3645. Faults are reset on a rising edge of this input.
Note that the unit will not operate unless this input is on. This unit can be
jumpered high if the unit does not need remote operation. In this case, faults
must be cleared by cycling power to the Regen.
4.5.3. FAULT RECALL INPUT -TB2-3
For units with no digital display, the last fault record can be retrieved by
disabling the regen unit and activating this input.
The last fault code will blink out until the unit is re-enabled.
For units with a digital display, this input has no function.
4.5.4. INPUT COM -TB2-4
All user inputs are common to this terminal.
4.5.5. READY OUTPUT - TB2-6
This output closes to TB2-8 when the M3645 is ready to operate. This contact
will open if the system is not enabled, if the system is powered off, or on any
fault condition.
4.5.6. OVERTEMPERATURE OUTPUT - TB2-7
This output closes to TB2-8 when the unit is not indicating an overtemp fault,
and opens if the unit reaches an unsafe operating temperature. The M3645
will shut down to protect itself from damage during an overtemperature fault.
4.5.7. OUTPUT COM - TB2-8
This terminal is the common to the outputs. It is not common to TB2-4, and
allows the use of a different power supply for outputs if the installation
requires.
To Next Page
Loading...