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F637
PTC 1 Thermal Selection
Program Special Special Parameters
This parameter Enables/Disables the optional external thermal detection circuit
of the Expansion IO Card Option 1. A thermistor is connected from TH1+ to
TH1- of TB3 on the Expansion IO Card Option 1.
Should the thermistor resistance reading fall below 50 because of an over-
temperature condition or exceed 3000 because of an open circuit, an External
Thermal Fault (OH2) will be incurred.
Note:
While this parameter is Enabled, the system cannot be restarted
until the thermistor value recovers to the level of 1.8 k from an
over-temperature condition. An Auto-Restart will not be
initiated subsequent to an External Thermal Trip (OH2); a
manual restart will be required.
Settings:
0 — Disabled
1 — Detect Disconnect
PTC 2 Thermal Selection
Program Special Special Parameters
This parameter Enables/Disables the optional external thermal detection circuit
of the Expansion IO Card Option 2. A thermistor is connected from TH1+ to
TH1- of TB4 on the Expansion IO Card Option 2.
Should the thermistor resistance reading fall below 50 because of an over-
temperature condition or exceed 3000 because of an open circuit, an External
Thermal Fault (OH2) will be incurred.
Note:
While this parameter is Enabled, the system cannot be restarted
until the thermistor value recovers to the level of 1.8 k from an
over-temperature condition. An Auto-Restart will not be
initiated subsequent to an External Thermal Trip (OH2). A
manual restart will be required in the event of an OH2 trip.
Settings:
0 — Disabled
1 — Detect Disconnect
Braking Resistance Overload Time (not used)
Program Protection Dynamic Braking
This parameter sets the time that the braking resistor is allowed to sustain an
overload condition before a trip is incurred.
This feature is useful for applications that have a fluctuating load or for loads
that require a long deceleration time.
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Direct Access Number — F637
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — No
Direct Access Number — F638
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — No
Direct Access Number — F639
Parameter Type — Numerical
Factory Default — 5.0
Changeable During Run — No
Minimum — 0.1
Maximum — 600.0
Units — Seconds
Q9 Plus ASD Installation and Operation Manual
F639
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