Solcon MPS 3000, Руководство пользователя

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Ground Fault Level 2 (GND Fault Level 2)
Fault occurs when Ground current exceeds "GND Fault Level 2" setting for more than "G/F Level 2 Delay"
setting.
Minimum setting of "G/F Level 2 Delay" is 0. At 0 setting, the actual time delay is less than 70 ms.
Auto reset, when Enabled, occurs when Ground current decreases below "GND Fault Level 2" setting. While
starting, G/F During Start setting parameter overrides G/F Level 2. Designed to eliminate nuisance tripping
during start process (with high currents) when residual "C/T" connection is used.
Note
: GND Fault Level 2 fault is prevented when the highest of any of the line currents Exceeds "Current
Inhibit" value. It is designed to prevent opening of motor contactor under high short circuit conditions, to protect
its contacts from being damaged.
Communication Port Failed (Comm. Port Failed)
Fault occurs when the MPS3000 detects three consecutive transmissions from the host computer, in which a
parity bit, and/or the CRC word are wrong.
Auto reset, when Enabled, occurs when a transmission from the host computer is received properly.
Internal Failure
The MPS3000 incorporates a Built In Test program. Operating the self test program is done from a special
"Test/Maintenance Options" page. "Self Test Passed" message, after completion of the built in test, indicates
that the MPS3000 functions properly. "Self Test Failed", together with an error code (for factory use only) and
Internal Fault Led "ON" indicates a fault condition.
Auto reset, when Enabled, occurs when a successful test was performed and its result is "Self Test Passed"
message.
Note: Most of the MPS3000 self test programs are running continuously (much slower then the main program)
in the "background".
Control Circuit Open and Welded Contactor (Control Cir. Open), (Welded Contactor)
The MPS3000-C determines if the motor contactors are open or closed by checking the position of their
auxiliary contacts.
Any change in the position of the internal relays A and B (controlling the contactors) is followed by checking
their contacts position.
Please note that the Control Open / Welded contactor protections for contactor A are operative only if Config.
Input A and B are set to Contactor A N.C. and N.O. respectively. Same is correct for contactor B and Config.
Input C and D.
Control Circuit Open
: Fault occurs, if a change in the contactor's auxiliary contacts is not recognized after
energizing the internal relays A or B. Such a situation usually indicates, an "Control Circuit Open" fault.
Welded Contactor : Fault occurs, if a change in the contactor's auxiliary contacts is not recognized after
de-energizing the internal relays A or B. Such a situation usually indicates a "Welded Contactor" fault.
Auto reset, when Enabled, occurs when motor contactors properly follow the MPS3000-C commands.
Note : If motor contactors auxiliary contacts are not connected to the MPS3000-C Inputs, both the alarm and
trip of "Control Circuit Open" and "Welded Contactor" faults must be disabled.
Note : When "Control Cir. Open" and "Welded Contactor" faults are disabled, "Hard-wired Start" and "Hard-
Wired Stop" which receive information from the contactors auxiliary contacts are inoperative.
External Fault 1 / 2 / 3
External Fault 1, 2 or 3 occurs when the MPS3000 detects closed contact between the "External Fault 1",
"External Fault 2" or "External Fault 3" input terminals respectively. These inputs can be used for any external
faults.