Chromalox MaxPac, Руководство пользователя, Страница: 26 / 44

24
MaxPac IP
The Chromalox MaxPac IP is a solid-state proportional power controller that utilizes a Phase Angle firing
technique to modulate power to an inductive or resistive load. Separate adjustable Zero, Gain, Manual Bias,
and Current Limit potentiometers are provided along with screw type plug-in connectors for input signals,
Emergency Stop, and optional Remote Manual Bias with 0 - 100% dial. All units have thermostat protection
with N.C. contacts.
Start-up
The MaxPac IP has been factory calibrated for 4 - 20mA input. Be sure the operating voltage and signal
input are correctly applied. Also, make sure the Emergency Stop, if used, has N.O. contacts and jumper
pins 4 & 5 on the 10-pin connector if remote manual bias are not used. Please read the information on
calibration at the end of this section for current limit settings for loads with extreme hot to cold ratios or
those that are overrated. Other ranges may be field calibrated by use
of zero and gain potentiometers.
0-5MA
(0-10V)
4-20mA
10-50mA
COM
CLOSE FOR
REMOTE
STOP
N/C
N/C
JUMPER 4 TO 5
WHEN NOT USING
REMOTE POT
UNIT SHIPPED WITH JUMPER INSTALLED
INSTRUMENT
WIRE
L
O
A
D
SCR
FUSE
X1
L2
L1
CT
TB1 CON1P
JB1
JUMPER JB1 FOR 0-5mA
OPEN JB1 FOR 0-10V
Customer Connection
IMPORTANT: With the Current Limit option, the current transformer must be termi-
nated properly to prevent it from being damaged.
CAUTION