Acme PP-32 - Manual (Page 12)

12
PP-32
KOOLMASTER PP-32
REV.01
Sensors operate at low voltage and are isolated from the
supply. Be sure that sensor cables remain isolated from all high
voltage sources. In particular, do not route the sensor cables
through the same electrical knockout as other cables. Do not
connect the shield from the sensor cable to a terminal or a
ground.
Extending a sensor: Each sensor can be extended up to 500 feet (150
meters). To extend a sensor:
Use a shielded cable of outside diameter between 0.245 and
0.260 in (6.22 and 6.60 mm) (the cable dimensions should not
be under 18 AWG) to ensure the cable entry is liquid tight. Do
not ground the shielding.
It is preferable to solder the cable joint to ensure a proper
contact between the two cables.
CAUTION: Do not run sensor cables next to other power cables. When
crossing over other cables, cross at 90°.
Defective temperature sensors: An alarm is generated when a defective
sensor is detected. The defective temperature sensors are identified in
the "15. Alarm Log" menu. Press the
key to directly access this
menu.
2. ALARMS
There are two types of alarms on the market. One type activates when
current is cut off at its input, whereas the other activates when current
is supplied at its input. For an alarm of the first type, use the NC
ALARM