Instruction manual

IMP I IMP/P I SAM Hot Runner Controllers Instruction Manual
15
1. Select Normal or Standby Mode.
2. Select Low Temperature Alarm Mode.
a. Low Temperature Alarm Inhibit : Speaker will be off
and output relay inactive in the event of low tempera-
ture condition (useful during start-up procedures).
b. Low Temperature Alarm Active : 30 °F (17 °C) or
more below IMP setpoint temperature will sound
alarm and energize output relay contacts.
3. Turn Power On-Off Switch to “ON” position.
4. Alarm indications are automatic. (See detailed operation.)
1. Normal or Standby Operation
a. Normal : In this mode the standby feature is
defeated and temperature control is in accordance
with the IMP controller(s) settings.
b. Standby : With the toggle switch in this position,
the standby mode is engaged. This will set the
temperature of all IMP controllers operating in
automatic mode to a standby temperature of
200 ºF (93 ºC).
1) Any IMP controller operating in manual mode will
have its output power level reduced to 1/4 of its
present level.
2) When SAM and IMP controller(s) are in use at
normal operating temperature [setpoint above
230 ºF (119 ºC)], switching to standby mode will
result in an over temperature alarm until all zones
cool down to below 230 ºF (110 ºC).
2. Alarm Indications: When an over temperature or under
temperature condition exists in any zone occupied by an
IMP controller, both audio (tones) and visual (LED) alarms
will occur in the SAM.
a. Over Temp. : Occurs when an IMP thermocouple is
30 ºF (17 ºC) or more above setpoint. The speaker
will emit a high-pitched audio tone of about 2 KHz
repeating about twice per second. At the same time,
2.3 Basic Operation
2.4 Detailed Operation