(C) The power entry module is provided with a dual voltage selector inte-
grated into the fuse holder. The controller has been specially designed to
allow either 115 or 230 VAC operation. The voltage indicator window no-
tifies the user of the voltage selected. See
Figure 4
.
Two fuses are contained in the internal fuse holder. The fuse holder will accept
either 1/4" x 1 1/4" or 5 x 20 mm fuses. Access to the fuses and the voltage se-
lector is obtained by placing a flathead screwdriver in the slot at the top of the
power entry module and opening the module front panel.
WARNING:
Access to the fuses may not be obtained with the power cord
plugged into the IEC power line connector.
WARNING:
The output voltage to the heater socket (item 2 in Figure 4) is
the same as the input voltage of the power entry module (item 1 in Figure
4).
(2) The heater socket is the source of controlled power for the system heater.
This power is switched by the solid-state relay to maintain a constant tempera-
ture. The voltage is the same as that supplied through the entry module (A). For
a diagram of how to wire the heater to the controller see Figure 1 on page 13.
An extra line cord has been included with the unit for use with the heater
socket.
(3) The control probe is plugged in here. The probe is a DIN 43760 type RTD.
Probes or additional connectors for use with the user’s probes are available
from Hart. For assistance in wiring an RTD to the controller see Figure 2 on
page 14. A probe connector has been provided for use with the control probe
connection.
(4) The RS-232 communications cable is connected to this 9 pin D-subminia-
ture connector. This enables the controller to be programmed and operated
remotely.
(5) The serial number label (not shown) is located on the bottom of the unit to-
wards the back panel.
19
5 Parts and Controls
Back Panel
