TECO-Westinghouse EQ7 Series, Instruction Manual, Page: 49 / 248

2-26
Table 2.8 lists function of each slide switch.
Table 2.8 Function of Each Slide Switch
Switch Function
SW1
Switches the service mode of the digital input terminals between SINK and SOURCE.
▪ This switches the input mode of digital input terminals [X1] to [X7], [FWD] and [REV] to be
used as the SINK or SOURCE mode.
▪ The factory default is SINK.
SW2
Switches the terminating resistor of RS-485 communications port on the inverter ON and OFF.
(RS-485 communications port 2, on the control PCB)
▪ If the inverter is connected to the RS-485 communications network as a terminating device,
turn SW2 to ON.
SW3
Switches the terminating resistor of RS-485 communications port on the inverter ON and OFF.
(RS-485 communications port 1, for connecting the keypad)
▪ To connect a keypad to the inverter, turn SW3 to OFF. (Factory default)
▪ If the inverter is connected to the RS-485 communications network as a terminating device,
turn SW3 to ON.
SW4/SW6
Switches the output form of analog output terminals [FM1] and [FM2] between voltage and
current.
When changing the setting of SW4 and SW6, also change the data of function codes F29 and
F32, respectively.
Output form
[FM1] [FM2]
SW4 F29 data SW6 F32 data
Voltage output (Factory default) VO1 0 VO2 0
Current output IO1 1 IO2 1
SW5
Switches the property of the analog input terminal [C1] between analog setting current input,
PTC thermistor input, and NTC thermistor input.
When changing this switch setting, also change the data of function code H26.
Function
SW5 H26 data
Analog setting current input (Factory default) C1 0
PTC thermistor input PTC/NTC 1 (alarm) or 2
(warning)
NTC thermistor input PTC/NTC 3
Figure 2.20 shows the location of slide switches on the control PCB for the input/output terminal configuration.
Switch Configuration and Factory Defaults
SW1 SW2 SW3
SW4/SW
6
SW5
Factory
default
SINK
OFF OFF VO1/VO2 C1
---
SOURCE
ON
ON
IO1/IO2 PTC/NTC
Figure 2.20 Location of the Slide Switches
on the Control PCB
To move a switch slider, use a tool with a narrow tip (e.g., a tip of tweezers). Be careful not to touch other
electronic parts, etc. If the slider is in an ambiguous position, the circuit is unclear whether it is turned ON
or OFF and the digital input remains in an undefined state. Be sure to place the slider so that it contacts
either side of the switch.