Sequence Diagram - Unigas PN91 Manual Of Installation - Use - Maintenance

Absorption
Mounting position
Protection
Perm. input current at terminal 1
Perm. current rating of control terminals 3, 6, 7, 9...11, 15...20
Internal fuse
External fuse
Weight
A
t11
a
I
b
t7
a
II
b
a
III
b
IV
a
V
b
t1 6
V I
a
V II
b
a
V III
b
IX
a
X
b
a
X I
b
a
X II *
b
t10*
a
X III
b
a
X IV
b
Lockout position indication
Key
t1 Prepurge time with air damper fully open
t2 Safety time
t3 Preignition time, short («Z» connected to terminal 16)
T3' Preignition time, long («Z» connected to terminal 15)
t3n Postignition time («Z» connected to terminal 15)
t4 Interval between voltage at terminals 18 and 19 («BV1-BV2»)
t5 Interval between voltage at terminals 19 and 20 («BV2» load
AC 3.5 VA
optional
IP 40
AC 5 A max., 20 A peak
4 A max., 20 A peak
T6,3H250V according to IEC 127
max. 10 A
Device 1000 g
Plug-in base 165 g
t1 t12
t3
t3"
t8
L
X I
b
E K 1 *
L 1
3 2 1
A L
E K 2 *
N

Sequence diagram

B C
t4
t3 n
t5
t20
t2
controller)
t6 Postpurge time (with «M2»)
t7 Interval between start command and voltage at terminal 7 (start
delay time for «M2»)
t8 Duration of startup sequence (excluding «t11» and «t12»)
t10 Interval from startup to the beginning of the air pressure check
t11 Air damper running time to the OPEN position
t12 Air damper running time to the low-fire position (MIN)
t13 Permissible afterburn time
t16 Interval to the OPEN command for the air damper
t20 For self-shutdown of the sequence switch
S
H
S B
1
A S
b r1
a b
I
a
b
ar1
a r2
4 6 7
W
M 1 M 2
R
B
N
5
fr2
fr1
a
b
IX
X
X III X II II V III
IV
a a b b a a b a b
A R
b r2
M
E
B R
A
2 1 5 1 6 1 8 1 7 1 9
1 (3 )
S A
H
v
Z
B V 1 B V 2
Control output at terminal
D
t6
*
1 2
4
7
1 9
16
10
9
15
9
11
20
8
17
1 8
t13
Q R C 1 ...
b l sw b r
22
2 3 1
Q R B 1 ...
22 2 3 2 4
V
F R
a b
X IV
a b
V II
a b
a r3
V III
V I
a b a b
S M
M
9 11 1 0 8
2 0
L R
a z m
M L K
7 1 5 3 a 0 7 /0 4 9 6