Yokogawa 414 Batch Controller - Manual (Page 50)

48 Installation
7. INSTALLATION
7.1 GENERAL
Terminal designations for the Model 414Dand 414B Batch Controllers are given
on the following pages. The cutout hole in the panel should be 5.5" (139mm) wide
x 2.6" (67mm) high. Two side clips are supplied to secure the instruments into
panel.
A case earthing point is provided via an earth lug on the side of the case. Note that
this earthing point is for the case only and there is complete electrical isolation
between this point and all electronic circuits. For EMC purposes, or when the
instrument is connected to mains, this point must be connected to a good earth
using a multi-stranded, braided wire or strap. All relay outputs are totally isolated
from the case and from the internal circuitry.
The two output relays are changeover relays and both the "normally open" and the
"normally closed" terminals are available on the rear terminal strips. All relay
outputs are totally isolated from the case and from the internal circuitry.
A Supply Output voltage is provided to power sensors. This output will provide a
regulated voltage of 8 to 24 volts and the voltage is adjustable by means of the
potentiometer on the rear panel. Maximum current is 50mA and the instrument
comes with the voltage factory set at 24 Volts. When the instrument is powered
from a DC power source, the maximum output voltage on the Supply Output is the
DC Input Voltage less 3.5 volts.
The instrument will operate from either 12 - 28 volts DC or from the mains. The
mains voltage is factory set to either 95 - 135 VAC (110 VAC nominal) or 190 -
260 VAC (220 VAC nominal). An internal mains transformer provides full
isolation between the mains and the electronic circuits.
The DC Ground terminal 12 provides a common ground for the 12 - 28 Volt power
input, the 8 - 24 Volt output, the pulse output and End of Batch output.