Emb Safety Interlock - Trane TR200 Operating Instructions Manual

EMB Safety Interlock

General Information
The safety interlock feature prevents the drive or bypass from operating. For operation in drive or bypass, the
safety interlock input contact must be closed. Only a fire mode command to run in bypass overrides this func-
tion.Safety inputs include, but are not limited to, high and low pressure limit switches, fire alarm, smoke alarm,
high and low temperature switches, and vibration sensors.
Operation
When an external safety input closes, the option panel is in operational mode. When open, power is interrupted
to all contactors and relays and the bypass ignores all run commands except for fire mode operation, when
enabled. When power is interrupted in drive mode, the drive display indicates an external fault, meaning the
problem is external to the drive. In some instances, a fault can be caused by a failure within the option panel,
which will still be reported as an external fault from the drive. A factory installed jumper allows the unit to operate
when no safety input is connected. This jumper must be removed when connecting in a safety interlock circuit.
Safety Interlock Function Setup
• For EMB1 and EMB2, remove factory-installed jumper between terminals 5 and 6 on connector X55.
• Wire safety input to terminals 5 and 6 on connector X55.
• For EMB(0), wire safety input to connector TB1, terminals 1 and 2.
EMB Fire Mode
General Information
The fire mode function is built-in. Fire mode runs the motor at full speed in bypass and is intended to ignore
common safety, overload, and bypass switch inputs in emergency situations. The motor will continue to run in
bypass until fire mode is removed or the unit fails.
Prior to Enabling Fire Mode
• Complete the start-up procedure to verify motor rotation direction in bypass is correct and that the
system is ready in all respects for continuous full speed operation in bypass.
Operation
• Activation of fire mode is accomplished by closing connector X55, input terminals 7 and 8.
• When activated, a relay overrides the safety circuit, motor overload, and bypass switch (SW1) position.
• Fire mode is deactivated only when removed or fuses blow.
• Fire mode status can be reported through connector X55, terminals 9 and 10, a normally open dry contact
that closes when fire mode is active.
Fire Mode Function Setup
• Wire fire mode input to connector X55, terminals 7 and 8.
• Wire fire mode status output to connector X55, terminals 9 and 10.
EMB Fault Reporting
General Information
A fault indication is provided if the drive experiences a fault or bypass input power is lost. The EMB2 bypass
control card monitors the drive fault output for status reporting. The fault contacts are fail-safe, meaning that if
power is removed a fault condition is automatically reported. Fault status is not monitored in bypass operation.
TR200 Option Panel Operating Instructions
Electromechanical Bypass (EMB) Operation
37