Chromalox 1603 User Manual

18 Chromalox 1603 User's Manual
Error Messages
OVERRANGE, UNDERRANGE, and BURN-OUT
INDICATIONS
The controller shows the OVERRANGE and
UNDERRANGE conditions with the following
UnderrangeOverrange
indications:
The sensor leads break can be signalled as:
• for TC input: OVERRANGE
• for RTD input: OVERRANGE
Sensor leads short circuit detection:
On RTD input, a special test is provided to signal
OVERRANGE when input resistance is less than 15 ohm
(short circuit sensor detection).
Note;
• When the controller is set for one output only, and an
OVERRANGE is detected, the OUT 1 turns OFF (if
reverse action) or ON (if direct action).
• When the controller is set for heating/cooling action,
an and OVERRANGE is detected, OUT 1 turns OFF
and OUT 2 turns ON.
• When the controller is set for one output only, and an
UNDERRANGE is detected, the OUT 1 turns ON (if
reverse action) or OFF ( if direct action).
• When the controller is set for heating/cooling action,
and an UNDERRANGE is detected, OUT 1 turns ON
and OUT 2 turns OFF.
• When an OVERRANGE or UNDERRANGE is
detected, the alarms operate as in the presence of the
maximum or the minimum measurable value
respectively.
To eliminate the OUT OF RANGE condition, proceed as
follows:
1. Check the input signal source and the connecting line.
2. Make sure that the input signal is in accordance with
controller configuration; otherwise, modify the input
configuration. See P1.

Chromalox 1603 Specifications

General

Brand	Chromalox
Model	1603
Category	Temperature Controller
Language	English