88
P S -21 Wirin g Dia g ra m
PS-21
OFF
E
-
+
TEMPERATURE SENSOR
#
- SUPPLY
#
TAPE OR CABLE TIE TEMPERATURE SENSOR TO NEGATIVE BATTERY TERMINAL (OR AS
CLOSE AS POSSIBLE). CONNECT BLACK STRIPED WIRE OF SENSOR TO R- OR B-
20 TO 60 VDC INPUT SUPPLY *
VA+
VA-
R+
R-
TS
B+
B-
+ SUPPLY
EARTH
* A NEGATIVE DC INPUT SUPPLY CAN BE USED. CONNECT THE MORE POSITIVE WIRE
(eg. 0 V) TO + SUPPLY AND CONNECT THE MORE NEGATIVE WIRE (eg. -48 V) TO - SUPPLY.
CAUTION! Connecting the
battery in reverse may cause
damage to the power supply.
-
+
24 VDC AUXILIARY OUTPUT (OPTIONAL)
13.8 VDC OUTPUT (FOR RADIO OR OTHER DEVICE)
-
-
+
BACKUP
BATTERY
GREY OR WHITE OR RED WITH BLACK STRIPE
+
FUSE
SLOW BLOW, EXTERNAL FUSE. USE FOLLOWING FUSE ACCORDING TO SUPPLY
VOLTAGE: 20 TO 28 V = 4.0 A, 29 TO 39 V = 3.0 A, 40 TO 56 V = 2.0 A, 57-60 V = 1.5 A