
Environmental:
1. Temperature - Operating: -20 F (-29 C) to 140 F (60 C)
2. Relative Humidity - 10 to 90% RH (non-condensing)
3. The EL78 should be mounted indoors in an environment that is free from excessive conta-
minants such as oil, moisture and dirt.
Physical: Enclosure Dimensions
Enclosure: NEMA 1 drawn steel with lockable hasp
W = 14.3" (36.4cm), H = 16.1" (40.9 cm), D = 6.1" (15.6 cm), Weight: Approx. 17.3 lbs. (7.8 kg)
FUNCTIONAL DESCRIPTION
Front Panel Layout
Input Connections
Sensor Connection: 1. red
2. yellow
3. black
External Override: use RED + YEL (Use manual switch or isolated contacts.)
CAUTION: Do not apply voltage to sensor inputs. To do so will damage control.
NOTE: It is highly recommended that shielded cable be used for sensor and override
input wiring. The shield should be tied to earth ground at the control using the "INPUT
SHIELD" screw terminals. The shield should be left floating (unconnected) at the sen-
sor end. It is also recommended that shielded cable not be placed in metal conduit.
4
Program Header Menu
TIME
CONF
ASTR
EVNT
INPT
EVNT SENS
HOL
RS232
Master Reset
Содержание EL78
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