Specifications

Thermolator TW-1 and TW-2 UGH015/0100
The TW-1 and TW-2 Thermolators provide the ability to pro-
tect system parameters from unauthorized changes during nor-
mal operating mode. When system passcode protection is
enabled, the following parameters cannot be changed unless
you enter the correct passcode:
● The Process Setpoint
● High Deviation Alarm Setpoint
● Low Deviation Alarm Setpoint
● Baud Rate selection for serial communications
● Address selection for serial communications
When the unit is turned on for the first time, passcode protec-
tion is disabled. To enable passcode protection:
Disconnect and lock out main power to the unit.
Open the electrical enclosure.
Set dip switch 3 to ON
and switches 5 and 6
to OFF.
Close the electrical enclosure and restore
power to the unit.
Press any
button when
the control dis-
plays “Pas rSt”
(Passcode Reset).
The control will
display the last
passcode used.
Select a new passcode using the
▲▲
and
▼▼
setpoint adjustment buttons.
Stop pressing the setpoint buttons when the passcode you
want appears in the setpoint display window. Selecting
“OFF” as the passcode will disable the passcode feature.
ENABLING AND
DISABLING
PASSCODE
PROTECTION
3-10 INSTALLATION
WARNING: Electric shock hazard
This equipment is powered by high voltage. Always
disconnect and lock out the main power source
before opening the unit or the electrical enclosure to
modify factory settings. Failure to disconnect and
lock out the main power source can result in severe
personal injury.
1
2
3
4
876
54
3
21
5
6
NOTE: All dip switch illustra-
tions in this manual show
switches 7 and 8 set to ON.
If you have an Isolated
Circuit model, these switch-
es should be set to OFF.
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